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  1. //********************************************************
  2. //
  3. // Assignment 10 - Linked Lists, Typedef, and Macros
  4. //
  5. // Name: <Tyler Conti>
  6. //
  7. // Class: C Programming, <Spring 2025>
  8. //
  9. // Date: <04/19/2025>
  10. //
  11. // Description: Program which determines overtime and 
  12. // gross pay for a set of employees with outputs sent 
  13. // to standard output (the screen).
  14. //
  15. // This assignment also adds the employee name, their tax state,
  16. // and calculates the state tax, federal tax, and net pay.   It
  17. // also calculates totals, averages, minimum, and maximum values.
  18. //
  19. // Array and Structure references have all been replaced with
  20. // pointer references to speed up the processing of this code.
  21. // A linked list has been created and deployed to dynamically
  22. // allocate and process employees as needed.
  23. //
  24. // It will also take advantage of the C Preprocessor features,
  25. // in particular with using macros, and will replace all 
  26. // struct type references in the code with a typedef alias
  27. // reference.
  28. //
  29. // Call by Reference design (using pointers)
  30. //
  31. //********************************************************
  32.  
  33. // necessary header files
  34. #include <stdio.h>
  35. #include <string.h>
  36. #include <ctype.h>   // for char functions
  37. #include <stdlib.h>  // for malloc
  38.  
  39. // define constants
  40. #define STD_HOURS 40.0
  41. #define OT_RATE 1.5
  42. #define MA_TAX_RATE 0.05
  43. #define NH_TAX_RATE 0.0
  44. #define VT_TAX_RATE 0.06
  45. #define CA_TAX_RATE 0.07
  46. #define DEFAULT_STATE_TAX_RATE 0.08
  47. #define NAME_SIZE 20
  48. #define TAX_STATE_SIZE 3
  49. #define FED_TAX_RATE 0.25
  50. #define FIRST_NAME_SIZE 10
  51. #define LAST_NAME_SIZE 10
  52.  
  53. // define macros
  54. #define CALC_OT_HOURS(theHours) ((theHours > STD_HOURS) ? theHours - STD_HOURS : 0)
  55. #define CALC_STATE_TAX(thePay,theStateTaxRate) (thePay * theStateTaxRate)
  56. #define CALC_FED_TAX(pay) ((pay) * FED_TAX_RATE)
  57. //macro added above - TC
  58.  
  59. // TODO (DONE) - Create a macro called CALC_FED_TAX.  It will be very similar
  60. //        to the CALC_STATE_TAX macro above.  Then call your macro in the
  61. //        the calcFedTax function (replacing the current code)
  62.  
  63. #define CALC_NET_PAY(thePay,theStateTax,theFedTax) (thePay - (theStateTax + theFedTax))
  64. #define CALC_NORMAL_PAY(theWageRate,theHours,theOvertimeHrs) \
  65. (theWageRate * (theHours - theOvertimeHrs))
  66. #define CALC_OT_PAY(theWageRate,theOvertimeHrs) (theOvertimeHrs * (OT_RATE * theWageRate))
  67.  
  68. // TODO (DONE) - These two macros are missing the correct logic, they are just setting
  69. //        things to zero at this point.  Replace the 0.0 value below with the
  70. //        right logic to determine the min and max values. These macros would
  71. //        work very similar to the CALC_OT_HOURS macro above using a 
  72. //        conditional expression operator.  The calls to these macros in the 
  73. //        calcEmployeeMinMax function are already correct
  74. //        ... so no changes needed there.
  75.  
  76. #define CALC_MIN(val, curMin) \
  77. ( ((curMin) == 0.0f || (val) < (curMin)) ? (val) : (curMin) )
  78. #define CALC_MAX(val, curMax) \
  79. ( ((val) > (curMax)) ? (val) : (curMax) )
  80. // check above if spacing correct - TC
  81.  
  82.  
  83. // Define a global structure type to store an employee name
  84. // ... note how one could easily extend this to other parts
  85. // parts of a name:  Middle, Nickname, Prefix, Suffix, etc.
  86. struct name
  87. {
  88.     char firstName[FIRST_NAME_SIZE];
  89.     char lastName [LAST_NAME_SIZE];
  90. };
  91.  
  92. // Define a global structure type to pass employee data between functions
  93. // Note that the structure type is global, but you don't want a variable
  94. // of that type to be global. Best to declare a variable of that type
  95. // in a function like main or another function and pass as needed.
  96.  
  97. // Note the "next" member has been added as a pointer to structure employee.
  98. // This allows us to point to another data item of this same type, 
  99. // allowing us to set up and traverse through all the linked 
  100. // list nodes, with each node containing the employee information below.
  101.  
  102. // Also note the use of typedef to create an alias for struct employee
  103. typedef struct employee
  104. {
  105.     struct name empName;
  106.     char taxState [TAX_STATE_SIZE];
  107.     long int clockNumber;
  108.     float wageRate;
  109.     float hours;
  110.     float overtimeHrs;
  111.     float grossPay;
  112.     float stateTax;
  113.     float fedTax;
  114.     float netPay;
  115.     struct employee * next;
  116. } EMPLOYEE;
  117.  
  118. // This structure type defines the totals of all floating point items
  119. // so they can be totaled and used also to calculate averages
  120.  
  121. // Also note the use of typedef to create an alias for struct totals
  122. typedef struct totals
  123. {
  124.     float total_wageRate;
  125.     float total_hours;
  126.     float total_overtimeHrs;
  127.     float total_grossPay;
  128.     float total_stateTax;
  129.     float total_fedTax;
  130.     float total_netPay;
  131. } TOTALS;
  132.  
  133. // This structure type defines the min and max values of all floating
  134. // point items so they can be display in our final report
  135.  
  136. // Also note the use of typedef to create an alias for struct min_max
  137.  
  138. // TODO (DONE) - Add a typedef alias to this structure, call it: MIN_MAX
  139. //        Then update all associated code (prototypes plus the main, 
  140. //        printEmpStatistics and calcEmployeeMinMax functions) that reference 
  141. //        "struct min_max".  Essentially, replacing "struct min_max" with the 
  142. //        typedef alias MIN_MAX
  143.  
  144. typedef struct min_max
  145. {
  146.     float min_wageRate;
  147.     float min_hours;
  148.     float min_overtimeHrs;
  149.     float min_grossPay;
  150.     float min_stateTax;
  151.     float min_fedTax;
  152.     float min_netPay;
  153.     float max_wageRate;
  154.     float max_hours;
  155.     float max_overtimeHrs;
  156.     float max_grossPay;
  157.     float max_stateTax;
  158.     float max_fedTax;
  159.     float max_netPay;
  160. } MIN_MAX;
  161.  
  162. // Define prototypes here for each function except main
  163. // Typedef below added - TC
  164. MIN_MAX employeeMinMax = {0};
  165. MIN_MAX *emp_minMax_ptr = &employeeMinMax;
  166.  
  167. // Note the use of the typedef alias values throughout
  168. // the rest of this program, starting with the fucntions
  169. // prototypes
  170. //
  171. //     EMPLOYEE instead of struct employee
  172. //     TOTALS instead of struct totals
  173. //     MIN_MAX instead of struct min_max
  174.  
  175. EMPLOYEE * getEmpData (void);
  176. int isEmployeeSize (EMPLOYEE * head_ptr);
  177. void calcOvertimeHrs (EMPLOYEE * head_ptr);
  178. void calcGrossPay (EMPLOYEE * head_ptr);
  179. void printHeader (void);
  180. void printEmp (EMPLOYEE * head_ptr);
  181. void calcStateTax (EMPLOYEE * head_ptr);
  182. void calcFedTax (EMPLOYEE * head_ptr);
  183. void calcNetPay (EMPLOYEE * head_ptr);
  184. void calcEmployeeTotals (EMPLOYEE * head_ptr,
  185.                          TOTALS * emp_totals_ptr);
  186.  
  187. // TODO (DONE) - Update these two prototypes with the MIN_MAX typedef alias                              
  188. void calcEmployeeMinMax(EMPLOYEE* head_ptr, MIN_MAX* emp_minMax_ptr);
  189.  
  190. void printEmpStatistics(TOTALS* emp_totals_ptr, MIN_MAX* emp_minMax_ptr, int size);
  191.  
  192. int main ()
  193. {
  194.  
  195.     // ******************************************************************
  196.     // Set up head pointer in the main function to point to the
  197.     // start of the dynamically allocated linked list nodes that will be 
  198.     // created and stored in the Heap area.
  199.     // ******************************************************************
  200.     EMPLOYEE * head_ptr; // always points to first linked list node
  201.  
  202.     int theSize; // number of employees processed
  203.  
  204.     // set up structure to store totals and initialize all to zero
  205.     TOTALS employeeTotals  = {0,0,0,0,0,0,0};
  206.  
  207.     // pointer to the employeeTotals structure
  208.     TOTALS * emp_totals_ptr = &employeeTotals;
  209.  
  210.     // TODO (DONE) - Update these two variable declarations to use
  211.     //        the MIN_MAX typedef alias
  212.  
  213.     // set up structure to store min and max values and initialize all to zero
  214.     MIN_MAX  employeeMinMax  = {0};
  215.  
  216.     // pointer to the employeeMinMax structure
  217.     MIN_MAX* emp_minMax_ptr   = &employeeMinMax;
  218.  
  219.     // ********************************************************************
  220.     // Read the employee input and dynamically allocate and set up our 
  221.     // linked list in the Heap area.  The address of the first linked
  222.     // list item representing our first employee will be returned and
  223.     // its value is set in our head_ptr. We can then use the head_ptr 
  224.     // throughout the rest of this program anytime we want to get to get 
  225.     // to the beginning of our linked list.
  226.     // ********************************************************************
  227.  
  228.     head_ptr = getEmpData ();
  229.  
  230.     // ********************************************************************
  231.     // With the head_ptr now pointing to the first linked list node, we
  232.     // can pass it to any function who needs to get to the starting point
  233.     // of the linked list in the Heap.  From there, functions can traverse 
  234.     // through the linked list to access and/or update each employee.
  235.     //
  236.     // Important:  Don't update the head_ptr ... otherwise, you could lose
  237.     //             the address in the heap of the first linked list node.
  238.     //
  239.     // ********************************************************************
  240.  
  241.     // determine how many employees are in our linked list
  242.  
  243.     theSize = isEmployeeSize (head_ptr);
  244.  
  245.     // Skip all the function calls to process the data if there
  246.     // was no employee information to read in the input
  247.     if (theSize <= 0)
  248.     {
  249.         // print a user friendly message and skip the rest of the processing
  250.         printf("\n\n**** There was no employee input to process ***\n");
  251.     }
  252.  
  253.     else // there are employees to be processed
  254.     {    
  255.  
  256.         // *********************************************************
  257.         // Perform calculations and print out information as needed
  258.         // *********************************************************
  259.  
  260.         // Calculate the overtime hours
  261.         calcOvertimeHrs (head_ptr);
  262.  
  263.         // Calculate the weekly gross pay
  264.         calcGrossPay (head_ptr); 
  265.  
  266.         // Calculate the state tax                                       
  267.         calcStateTax (head_ptr);
  268.  
  269.         // Calculate the federal tax                                                   
  270.         calcFedTax (head_ptr);
  271.  
  272.         // Calculate the net pay after taxes   
  273.         calcNetPay (head_ptr); 
  274.  
  275.         // *********************************************************
  276.         // Keep a running sum of the employee totals
  277.         //
  278.         // Note the & to specify the address of the employeeTotals
  279.         // structure.  Needed since pointers work with addresses.
  280.         // Unlike array names, C does not see structure names
  281.         // as address, hence the need for using the &employeeTotals
  282.         // which the complier sees as "address of" employeeTotals
  283.         // *********************************************************
  284.         calcEmployeeTotals (head_ptr, 
  285.                             &employeeTotals);
  286.  
  287.         // *****************************************************************                                  
  288.         // Keep a running update of the employee minimum and maximum values
  289.         //
  290.         // Note we are passing the address of the MinMax structure
  291.         // *****************************************************************
  292.         calcEmployeeMinMax (head_ptr, 
  293.                             &employeeMinMax);
  294.  
  295.         // Print the column headers
  296.         printHeader();
  297.  
  298.         // print out final information on each employee
  299.         printEmp (head_ptr); 
  300.  
  301.         // **************************************************
  302.         // print the totals and averages for all float items
  303.         //
  304.         // Note that we are passing the addresses of the 
  305.         // the two structures
  306.         // **************************************************
  307.         printEmpStatistics (&employeeTotals, 
  308.                             &employeeMinMax, 
  309.                             theSize);
  310.     }
  311.  
  312.     // indicate that the program completed all processing
  313.     printf ("\n\n *** End of Program *** \n");
  314.  
  315.     return (0); // success
  316.  
  317. } // main
  318.  
  319. //**************************************************************
  320. // Function: getEmpData 
  321. // 
  322. // Purpose: Obtains input from user: employee name (first an last), 
  323. //          tax state, clock number, hourly wage, and hours worked
  324. //          in a given week.
  325. //
  326. //          Information in stored in a dynamically created linked
  327. //          list for all employees.
  328. //          
  329. // Parameters: void
  330. // 
  331. // Returns:
  332. //
  333. //    head_ptr - a pointer to the beginning of the dynamically
  334. //               created linked list that contains the initial
  335. //               input for each employee.
  336. //  
  337. //**************************************************************
  338.  
  339. EMPLOYEE * getEmpData (void)
  340. {
  341.  
  342.     char   answer[80];    // user prompt response
  343.     int    more_data = 1; // a flag to indicate if another employee
  344.                           // needs to be processed
  345.     char   value;         // the first char of the user prompt response
  346.  
  347.     EMPLOYEE *current_ptr,   // pointer to current node
  348.              *head_ptr;      // always points to first node
  349.  
  350.     // Set up storage for first node   
  351.     head_ptr = (EMPLOYEE *) malloc (sizeof(EMPLOYEE));
  352.     current_ptr = head_ptr;
  353.  
  354.     // process while there is still input
  355.     while (more_data)
  356.     {
  357.  
  358.         // read in employee first and last name
  359.         printf ("\nEnter employee first name: ");
  360.         scanf ("%s", current_ptr->empName.firstName);
  361.         printf ("\nEnter employee last name: ");
  362.         scanf ("%s", current_ptr->empName.lastName);
  363.  
  364.         // read in employee tax state
  365.         printf ("\nEnter employee two character tax state: ");
  366.         scanf ("%s", current_ptr->taxState);
  367.  
  368.         // read in employee clock number
  369.         printf("\nEnter employee clock number: ");
  370.         scanf("%li", & current_ptr -> clockNumber);
  371.  
  372.         // read in employee wage rate
  373.         printf("\nEnter employee hourly wage: ");
  374.         scanf("%f", & current_ptr -> wageRate);
  375.  
  376.         // read in employee hours worked
  377.         printf("\nEnter hours worked this week: ");
  378.         scanf("%f", & current_ptr -> hours);
  379.  
  380.         // ask user if they would like to add another employee
  381.         printf("\nWould you like to add another employee? (y/n): ");
  382.         scanf("%s", answer);
  383.  
  384.         // check first character for a 'Y' for yes
  385.         // Ask user if they want to add another employee
  386.         if ((value = toupper(answer[0])) != 'Y')
  387.         {
  388.            // no more employees to process
  389.            current_ptr->next = (EMPLOYEE *) NULL;
  390.            more_data = 0; 
  391.         }
  392.         else // Yes, another employee
  393.         {
  394.            // set the next pointer of the current node to point to the new node
  395.            current_ptr->next = (EMPLOYEE *) malloc (sizeof(EMPLOYEE));
  396.            // move the current node pointer to the new node
  397.            current_ptr = current_ptr->next;
  398.         }
  399.  
  400.     } // while
  401.  
  402.     return(head_ptr);
  403.  
  404. } // getEmpData
  405.  
  406. //*************************************************************
  407. // Function: isEmployeeSize
  408. //
  409. // Purpose: Traverses the linked list and keeps a running count
  410. //          on how many employees are currently in our list. 
  411. //
  412. // Parameters:
  413. //
  414. //   head_ptr - pointer to the initial node in our linked list
  415. //
  416. // Returns:
  417. //
  418. //   theSize - the number of employees in our linked list
  419. //
  420. //**************************************************************
  421.  
  422. int isEmployeeSize (EMPLOYEE * head_ptr)
  423. {
  424.  
  425.     EMPLOYEE * current_ptr;   // pointer to current node
  426.     int theSize;              // number of link list nodes
  427.                               // (i.e., employees)
  428.  
  429.     theSize = 0; // initialize
  430.  
  431.     // assume there is no data if the first node does
  432.     // not have an employee name
  433.     if (head_ptr->empName.firstName[0] != '\0')
  434.     {
  435.  
  436.         // traverse through the linked list, keep a running count of nodes
  437.         for (current_ptr = head_ptr; current_ptr; current_ptr = current_ptr->next)
  438.         {  
  439.  
  440.             ++theSize;  // employee node found, increment
  441.  
  442.         } // for
  443.     }
  444.  
  445.     return (theSize);  // number of nodes (i.e., employees)
  446.  
  447.  
  448. } // isEmployeeSize
  449.  
  450. //**************************************************************
  451. // Function: printHeader
  452. // 
  453. // Purpose: Prints the initial table header information.
  454. // 
  455. // Parameters: none
  456. // 
  457. // Returns: void
  458. //  
  459. //**************************************************************
  460.  
  461. void printHeader (void) 
  462. { 
  463.  
  464.     printf ("\n\n*** Pay Calculator ***\n");
  465.  
  466.     // print the table header
  467.     printf("\n--------------------------------------------------------------");
  468.     printf("-------------------");
  469.     printf("\nName                Tax  Clock# Wage   Hours  OT   Gross ");
  470.     printf("  State  Fed      Net");
  471.     printf("\n                   State                           Pay   ");
  472.     printf("  Tax    Tax      Pay");
  473.  
  474.     printf("\n--------------------------------------------------------------");
  475.     printf("-------------------");
  476.  
  477. } // printHeader
  478.  
  479. //************************************************************* 
  480. // Function: printEmp 
  481. // 
  482. // Purpose: Prints out all the information for each employee
  483. //          in a nice and orderly table format.
  484. // 
  485. // Parameters: 
  486. //
  487. //   head_ptr - pointer to the beginning of our linked list
  488. // 
  489. // Returns: void
  490. //  
  491. //**************************************************************
  492.  
  493. void printEmp (EMPLOYEE * head_ptr)
  494. {
  495.  
  496.  
  497.     // Used to format the employee name
  498.     char name [FIRST_NAME_SIZE + LAST_NAME_SIZE + 1];
  499.  
  500.     EMPLOYEE * current_ptr; // pointer to current node
  501.  
  502.     // traverse through the linked list to process each employee
  503.     for (current_ptr = head_ptr; current_ptr; current_ptr = current_ptr->next)
  504.     {
  505.         // While you could just print the first and last name in the printf
  506.         // statement that follows, you could also use various C string library
  507.         // functions to format the name exactly the way you want it.  Breaking
  508.         // the name into first and last members additionally gives you some 
  509.         // flexibility in printing.  This also becomes more useful if we decide
  510.         // later to store other parts of a person's name. I really did this just 
  511.         // to show you how to work with some of the common string functions.
  512.         strcpy (name, current_ptr->empName.firstName);
  513.         strcat (name, " "); // add a space between first and last names
  514.         strcat (name, current_ptr->empName.lastName);
  515.  
  516.         // Print out current employee in the current linked list node
  517.         printf("\n%-20.20s %-2.2s  %06li %5.2f  %4.1f  %4.1f %7.2f %6.2f %7.2f %8.2f",
  518.                name, current_ptr->taxState, current_ptr->clockNumber, 
  519.                current_ptr->wageRate, current_ptr->hours,
  520.                current_ptr->overtimeHrs, current_ptr->grossPay, 
  521.                current_ptr->stateTax, current_ptr->fedTax, 
  522.                current_ptr->netPay);
  523.  
  524.     } // for
  525.  
  526. } // printEmp
  527.  
  528. //************************************************************* 
  529. // Function: printEmpStatistics 
  530. // 
  531. // Purpose: Prints out the summary totals and averages of all 
  532. //          floating point value items for all employees
  533. //          that have been processed.  It also prints
  534. //          out the min and max values.
  535. // 
  536. // Parameters: 
  537. //
  538. //   emp_totals_ptr - pointer to a structure containing a running total 
  539. //                    of all employee floating point items
  540. //
  541. //   emp_minMax_ptr - pointer to a structure containing
  542. //                    the minimum and maximum values of all
  543. //                    employee floating point items
  544. //
  545. //   tjeSize - the total number of employees processed, used 
  546. //             to check for zero or negative divide condition.
  547. // 
  548. // Returns: void
  549. //  
  550. //**************************************************************
  551.  
  552. // TODO (DONe)- Update the emp_MinMax_ptr parameter below to use the MIN_MAX 
  553. //        typedef alias
  554.  
  555. void printEmpStatistics (TOTALS * emp_totals_ptr, 
  556.                           MIN_MAX  * emp_minMax_ptr,
  557.                           int theSize)
  558. {
  559.  
  560.     // print a separator line
  561.     printf("\n--------------------------------------------------------------");
  562.     printf("-------------------");
  563.  
  564.     // print the totals for all the floating point items
  565.     printf("\nTotals:                         %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  566.            emp_totals_ptr->total_wageRate,
  567.            emp_totals_ptr->total_hours,
  568.            emp_totals_ptr->total_overtimeHrs,
  569.            emp_totals_ptr->total_grossPay,
  570.            emp_totals_ptr->total_stateTax,
  571.            emp_totals_ptr->total_fedTax,
  572.            emp_totals_ptr->total_netPay);
  573.  
  574.     // make sure you don't divide by zero or a negative number
  575.     if (theSize > 0)       
  576.     {
  577.         // print the averages for all the floating point items
  578.         printf("\nAverages:                       %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  579.                emp_totals_ptr->total_wageRate/theSize,
  580.                emp_totals_ptr->total_hours/theSize,
  581.                emp_totals_ptr->total_overtimeHrs/theSize,
  582.                emp_totals_ptr->total_grossPay/theSize,
  583.                emp_totals_ptr->total_stateTax/theSize,
  584.                emp_totals_ptr->total_fedTax/theSize,
  585.                emp_totals_ptr->total_netPay/theSize);
  586.  
  587.     } // if
  588.  
  589.     // print the min and max values for each item
  590.  
  591.     printf("\nMinimum:                        %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  592.            emp_minMax_ptr->min_wageRate,
  593.            emp_minMax_ptr->min_hours,
  594.            emp_minMax_ptr->min_overtimeHrs,
  595.            emp_minMax_ptr->min_grossPay,
  596.            emp_minMax_ptr->min_stateTax,
  597.            emp_minMax_ptr->min_fedTax,
  598.            emp_minMax_ptr->min_netPay);
  599.  
  600.     printf("\nMaximum:                        %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  601.            emp_minMax_ptr->max_wageRate,
  602.            emp_minMax_ptr->max_hours,
  603.            emp_minMax_ptr->max_overtimeHrs,
  604.            emp_minMax_ptr->max_grossPay,
  605.            emp_minMax_ptr->max_stateTax,
  606.            emp_minMax_ptr->max_fedTax,
  607.            emp_minMax_ptr->max_netPay);
  608.  
  609.     // print out the total employees process
  610.     printf ("\n\nThe total employees processed was: %i\n", theSize);
  611.  
  612. }  // printEmpStatistics
  613.  
  614. //*************************************************************
  615. // Function: calcOvertimeHrs
  616. //
  617. // Purpose: Calculates the overtime hours worked by an employee
  618. //          in a given week for each employee.
  619. //
  620. // Parameters:
  621. //
  622. //   head_ptr - pointer to the beginning of our linked list
  623. //
  624. // Returns: void (the overtime hours gets updated by reference)
  625. //
  626. //**************************************************************
  627.  
  628. void calcOvertimeHrs (EMPLOYEE * head_ptr)
  629. {
  630.  
  631.     EMPLOYEE * current_ptr; // pointer to current node
  632.  
  633.     // traverse through the linked list to calculate overtime hours
  634.     for (current_ptr = head_ptr; current_ptr; current_ptr = current_ptr->next)
  635.     {  
  636.         current_ptr->overtimeHrs = CALC_OT_HOURS(current_ptr->hours);
  637.  
  638.     } // for
  639.  
  640.  
  641. } // calcOvertimeHrs
  642.  
  643. //*************************************************************
  644. // Function: calcGrossPay
  645. //
  646. // Purpose: Calculates the gross pay based on the the normal pay
  647. //          and any overtime pay for a given week for each
  648. //          employee.
  649. //
  650. // Parameters:
  651. //
  652. //   head_ptr - pointer to the beginning of our linked list
  653. //
  654. // Returns: void (the gross pay gets updated by reference)
  655. //
  656. //**************************************************************
  657.  
  658. void calcGrossPay (EMPLOYEE * head_ptr)
  659. {
  660.  
  661.     float theNormalPay;   // normal pay without any overtime hours
  662.     float theOvertimePay; // overtime pay
  663.  
  664.     EMPLOYEE * current_ptr; // pointer to current node
  665.  
  666.     // traverse through the linked list to calculate gross pay
  667.     for (current_ptr = head_ptr; current_ptr; current_ptr = current_ptr->next)
  668.     {
  669.         // calculate normal pay and any overtime pay
  670.         theNormalPay = CALC_NORMAL_PAY(current_ptr->wageRate,
  671.                                        current_ptr->hours,
  672.                                        current_ptr->overtimeHrs);
  673.         theOvertimePay = CALC_OT_PAY(current_ptr->wageRate,
  674.                                      current_ptr->overtimeHrs);
  675.  
  676.         // calculate gross pay for employee as normalPay + any overtime pay
  677.         current_ptr->grossPay = theNormalPay + theOvertimePay;
  678.  
  679.     }
  680.  
  681. } // calcGrossPay
  682.  
  683. //*************************************************************
  684. // Function: calcStateTax
  685. //
  686. // Purpose: Calculates the State Tax owed based on gross pay
  687. //          for each employee.  State tax rate is based on the 
  688. //          the designated tax state based on where the
  689. //          employee is actually performing the work.  Each
  690. //          state decides their tax rate.
  691. //
  692. // Parameters:
  693. //
  694. //   head_ptr - pointer to the beginning of our linked list
  695. //
  696. // Returns: void (the state tax gets updated by reference)
  697. //
  698. //**************************************************************
  699.  
  700. void calcStateTax (EMPLOYEE * head_ptr)
  701. {
  702.  
  703.     EMPLOYEE * current_ptr; // pointer to current node
  704.  
  705.     // traverse through the linked list to calculate the state tax
  706.     for (current_ptr = head_ptr; current_ptr; current_ptr = current_ptr->next)
  707.     {
  708.         // Make sure tax state is all uppercase
  709.         if (islower(current_ptr->taxState[0]))
  710.             current_ptr->taxState[0] = toupper(current_ptr->taxState[0]);
  711.         if (islower(current_ptr->taxState[1]))
  712.             current_ptr->taxState[1] = toupper(current_ptr->taxState[1]);
  713.  
  714.         // calculate state tax based on where employee resides
  715.         if (strcmp(current_ptr->taxState, "MA") == 0)
  716.             current_ptr->stateTax = CALC_STATE_TAX(current_ptr->grossPay,
  717.                                                    MA_TAX_RATE);
  718.         else if (strcmp(current_ptr->taxState, "VT") == 0)
  719.             current_ptr->stateTax = CALC_STATE_TAX(current_ptr->grossPay,
  720.                                                    VT_TAX_RATE);
  721.         else if (strcmp(current_ptr->taxState, "NH") == 0)
  722.             current_ptr->stateTax = CALC_STATE_TAX(current_ptr->grossPay,
  723.                                                    NH_TAX_RATE);
  724.         else if (strcmp(current_ptr->taxState, "CA") == 0)
  725.             current_ptr->stateTax = CALC_STATE_TAX(current_ptr->grossPay,
  726.                                                    CA_TAX_RATE);
  727.         else
  728.             // any other state is the default rate
  729.             current_ptr->stateTax = CALC_STATE_TAX(current_ptr->grossPay,
  730.                                                    DEFAULT_STATE_TAX_RATE);
  731.  
  732.     } // for
  733.  
  734. } // calcStateTax
  735.  
  736. //*************************************************************
  737. // Function: calcFedTax
  738. //
  739. // Purpose: Calculates the Federal Tax owed based on the gross 
  740. //          pay for each employee
  741. //
  742. // Parameters:
  743. //
  744. //   head_ptr - pointer to the beginning of our linked list
  745. //
  746. // Returns: void (the federal tax gets updated by reference)
  747. //
  748. //**************************************************************
  749.  
  750. void calcFedTax (EMPLOYEE * head_ptr)
  751. {
  752.  
  753.     EMPLOYEE * current_ptr; // pointer to current node
  754.  
  755.     // traverse through the linked list to calculate the federal tax
  756.     for (current_ptr = head_ptr; current_ptr; current_ptr = current_ptr->next)
  757.     {
  758.  
  759.         // TODO (DONE) - Replace the below statement after the "=" with
  760.         //        a call to the CALC_FED_TAX macro you created
  761.  
  762.         // Fed Tax is the same for all regardless of state
  763.         current_ptr->fedTax = CALC_FED_TAX(current_ptr->grossPay);
  764.  
  765.     } // for
  766.  
  767. } // calcFedTax
  768.  
  769. //*************************************************************
  770. // Function: calcNetPay
  771. //
  772. // Purpose: Calculates the net pay as the gross pay minus any
  773. //          state and federal taxes owed for each employee.
  774. //          Essentially, their "take home" pay.
  775. //
  776. // Parameters:
  777. //
  778. //   head_ptr - pointer to the beginning of our linked list
  779. //
  780. // Returns: void (the net pay gets updated by reference)
  781. //
  782. //**************************************************************
  783.  
  784. void calcNetPay (EMPLOYEE * head_ptr)
  785. {
  786.  
  787.     EMPLOYEE * current_ptr; // pointer to current node
  788.  
  789.     // traverse through the linked list to calculate the net pay
  790.     for (current_ptr = head_ptr; current_ptr; current_ptr = current_ptr->next)
  791.     {
  792.         // calculate the net pay
  793.         current_ptr->netPay = CALC_NET_PAY(current_ptr->grossPay,
  794.                                            current_ptr->stateTax,
  795.                                            current_ptr->fedTax);
  796.     } // for
  797.  
  798. } // calcNetPay
  799.  
  800. //*************************************************************
  801. // Function: calcEmployeeTotals
  802. //
  803. // Purpose: Performs a running total (sum) of each employee
  804. //          floating point member item stored in our linked list 
  805. //
  806. // Parameters:
  807. //
  808. //   head_ptr - pointer to the beginning of our linked list
  809. //   emp_totals_ptr - pointer to a structure containing the 
  810. //                    running totals of each floating point
  811. //                    member for all employees in our linked
  812. //                    list
  813. //
  814. // Returns: 
  815. //
  816. //   void (the employeeTotals structure gets updated by reference)
  817. //
  818. //**************************************************************
  819.  
  820. void calcEmployeeTotals (EMPLOYEE * head_ptr,
  821.                          TOTALS   * emp_totals_ptr)
  822. {
  823.  
  824.     EMPLOYEE * current_ptr; // pointer to current node
  825.  
  826.     // traverse through the linked list to calculate a running 
  827.     // sum of each employee floating point member item
  828.     for (current_ptr = head_ptr; current_ptr; current_ptr = current_ptr->next)
  829.     {
  830.         // add current employee data to our running totals
  831.         emp_totals_ptr->total_wageRate += current_ptr->wageRate;
  832.         emp_totals_ptr->total_hours += current_ptr->hours;
  833.         emp_totals_ptr->total_overtimeHrs += current_ptr->overtimeHrs;
  834.         emp_totals_ptr->total_grossPay += current_ptr->grossPay;
  835.         emp_totals_ptr->total_stateTax += current_ptr->stateTax;
  836.         emp_totals_ptr->total_fedTax += current_ptr->fedTax;
  837.         emp_totals_ptr->total_netPay += current_ptr->netPay;
  838.  
  839.         // Note:  We don't need to increment emp_totals_ptr
  840.  
  841.     } // for
  842.  
  843.     // no need to return anything since we used pointers and have
  844.     // been referencing the linked list stored in the Heap area. 
  845.     // Since we used a pointer as well to the totals structure,
  846.     // all values in it have been updated.
  847.  
  848. } // calcEmployeeTotals
  849.  
  850. //*************************************************************
  851. // Function: calcEmployeeMinMax
  852. //
  853. // Purpose: Accepts various floating point values from an
  854. //          employee and adds to a running update of min
  855. //          and max values
  856. //
  857. // Parameters:
  858. //
  859. //   head_ptr - pointer to the beginning of our linked list
  860. //   emp_minMax_ptr - pointer to the min/max structure
  861. //
  862. // Returns: 
  863. //
  864. //   void (employeeMinMax structure updated by reference)
  865. //
  866. //**************************************************************
  867.  
  868. // TODO (done) - Update the emp_minMax_ptr parameter below to use the
  869. //        the MIN_MAX typedef alias
  870.  
  871. void calcEmployeeMinMax (EMPLOYEE * head_ptr,
  872.                          MIN_MAX   * emp_minMax_ptr)
  873. {
  874.  
  875.     EMPLOYEE * current_ptr; // pointer to current node
  876.  
  877.     // *************************************************
  878.     // At this point, head_ptr is pointing to the first
  879.     // employee .. the first node of our linked list
  880.     //
  881.     // As this is the first employee, set each min 
  882.     // min and max value using our emp_minMax_ptr
  883.     // to the associated member fields below.  They
  884.     // will become the initial baseline that we  
  885.     // can check and update if needed against the 
  886.     // remaining employees in our linked list.
  887.     // *************************************************
  888.  
  889.  
  890.     // set to first employee, our initial linked list node
  891.     current_ptr = head_ptr;
  892.  
  893.     // set the min to the first employee members
  894.     emp_minMax_ptr->min_wageRate = current_ptr->wageRate; 
  895.     emp_minMax_ptr->min_hours = current_ptr->hours;
  896.     emp_minMax_ptr->min_overtimeHrs = current_ptr->overtimeHrs; 
  897.     emp_minMax_ptr->min_grossPay = current_ptr->grossPay;
  898.     emp_minMax_ptr->min_stateTax = current_ptr->stateTax;
  899.     emp_minMax_ptr->min_fedTax = current_ptr->fedTax;
  900.     emp_minMax_ptr->min_netPay = current_ptr->netPay;
  901.  
  902.     // set the max to the first employee members
  903.     emp_minMax_ptr->max_wageRate = current_ptr->wageRate; 
  904.     emp_minMax_ptr->max_hours = current_ptr->hours;
  905.     emp_minMax_ptr->max_overtimeHrs = current_ptr->overtimeHrs;
  906.     emp_minMax_ptr->max_grossPay = current_ptr->grossPay;
  907.     emp_minMax_ptr->max_stateTax = current_ptr->stateTax;
  908.     emp_minMax_ptr->max_fedTax = current_ptr->fedTax;
  909.     emp_minMax_ptr->max_netPay = current_ptr->netPay;
  910.  
  911.     // ******************************************************
  912.     // move to the next employee
  913.     //
  914.     // if this the only employee in our linked list
  915.     // current_ptr will be NULL and will drop out the 
  916.     // the for loop below, otherwise, the second employee
  917.     // and rest of the employees (if any) will be processed
  918.     // ******************************************************
  919.     current_ptr = current_ptr->next;
  920.  
  921.     // traverse the linked list
  922.     // compare the rest of the employees to each other for min and max
  923.     for (; current_ptr; current_ptr = current_ptr->next) 
  924.     {
  925.  
  926.         // check if current Wage Rate is the new min and/or max
  927.         emp_minMax_ptr->min_wageRate = 
  928.            CALC_MIN(current_ptr->wageRate,emp_minMax_ptr->min_wageRate);
  929.         emp_minMax_ptr->max_wageRate = 
  930.            CALC_MAX(current_ptr->wageRate,emp_minMax_ptr->max_wageRate);
  931.  
  932.         // check if current Hours is the new min and/or max
  933.         emp_minMax_ptr->min_hours = 
  934.            CALC_MIN(current_ptr->hours,emp_minMax_ptr->min_hours);
  935.         emp_minMax_ptr->max_hours = 
  936.            CALC_MAX(current_ptr->hours,emp_minMax_ptr->max_hours);       
  937.  
  938.         // check if current Overtime Hours is the new min and/or max
  939.         emp_minMax_ptr->min_overtimeHrs = 
  940.            CALC_MIN(current_ptr->overtimeHrs,emp_minMax_ptr->min_overtimeHrs);
  941.         emp_minMax_ptr->max_overtimeHrs = 
  942.            CALC_MAX(current_ptr->overtimeHrs,emp_minMax_ptr->max_overtimeHrs);
  943.  
  944.         // check if current Gross Pay is the new min and/or max
  945.         emp_minMax_ptr->min_grossPay = 
  946.            CALC_MIN(current_ptr->grossPay,emp_minMax_ptr->min_grossPay);
  947.         emp_minMax_ptr->max_grossPay = 
  948.            CALC_MAX(current_ptr->grossPay,emp_minMax_ptr->max_grossPay);
  949.  
  950.         // check if current State Tax is the new min and/or max
  951.         emp_minMax_ptr->min_stateTax = 
  952.            CALC_MIN(current_ptr->stateTax,emp_minMax_ptr->min_stateTax);
  953.         emp_minMax_ptr->max_stateTax = 
  954.            CALC_MAX(current_ptr->stateTax,emp_minMax_ptr->max_stateTax);
  955.  
  956.         // check if current Federal Tax is the new min and/or max
  957.         emp_minMax_ptr->min_fedTax = 
  958.            CALC_MIN(current_ptr->fedTax,emp_minMax_ptr->min_fedTax);
  959.         emp_minMax_ptr->max_fedTax = 
  960.            CALC_MAX(current_ptr->fedTax,emp_minMax_ptr->max_fedTax);
  961.  
  962.         // check if current Net Pay is the new min and/or max
  963.         emp_minMax_ptr->min_netPay = 
  964.            CALC_MIN(current_ptr->netPay,emp_minMax_ptr->min_netPay);
  965.         emp_minMax_ptr->max_netPay = 
  966.            CALC_MAX(current_ptr->netPay,emp_minMax_ptr->max_netPay);
  967.  
  968.     } // for
  969.  
  970.     // no need to return anything since we used pointers and have
  971.     // been referencing all the nodes in our linked list where
  972.     // they reside in memory (the Heap area)
  973.  
  974. } // calcEmployeeMinMax
Success #stdin #stdout 0s 5280KB
comments (?)
stdin 
Connie
Cobol
MA
98401
10.60
51.0
Y
Mary
Apl
NH
526488
9.75
42.5
Y
Frank
Fortran
VT
765349
10.50
37.0
Y
Jeff
Ada
NY
34645
12.25
45
Y
Anton
Pascal
CA
127615
8.35
40.0
N
stdout 
Enter employee first name: 
Enter employee last name: 
Enter employee two character tax state: 
Enter employee clock number: 
Enter employee hourly wage: 
Enter hours worked this week: 
Would you like to add another employee? (y/n): 
Enter employee first name: 
Enter employee last name: 
Enter employee two character tax state: 
Enter employee clock number: 
Enter employee hourly wage: 
Enter hours worked this week: 
Would you like to add another employee? (y/n): 
Enter employee first name: 
Enter employee last name: 
Enter employee two character tax state: 
Enter employee clock number: 
Enter employee hourly wage: 
Enter hours worked this week: 
Would you like to add another employee? (y/n): 
Enter employee first name: 
Enter employee last name: 
Enter employee two character tax state: 
Enter employee clock number: 
Enter employee hourly wage: 
Enter hours worked this week: 
Would you like to add another employee? (y/n): 
Enter employee first name: 
Enter employee last name: 
Enter employee two character tax state: 
Enter employee clock number: 
Enter employee hourly wage: 
Enter hours worked this week: 
Would you like to add another employee? (y/n): 

*** Pay Calculator ***

---------------------------------------------------------------------------------
Name                Tax  Clock# Wage   Hours  OT   Gross   State  Fed      Net
                   State                           Pay     Tax    Tax      Pay
---------------------------------------------------------------------------------
Connie Cobol         MA  098401 10.60  51.0  11.0  598.90  29.95  149.73   419.23
Mary Apl             NH  526488  9.75  42.5   2.5  426.56   0.00  106.64   319.92
Frank Fortran        VT  765349 10.50  37.0   0.0  388.50  23.31   97.12   268.07
Jeff Ada             NY  034645 12.25  45.0   5.0  581.88  46.55  145.47   389.86
Anton Pascal         CA  127615  8.35  40.0   0.0  334.00  23.38   83.50   227.12
---------------------------------------------------------------------------------
Totals:                         51.45 215.5  18.5 2329.84 123.18  582.46  1624.19
Averages:                       10.29  43.1   3.7  465.97  24.64  116.49   324.84
Minimum:                         8.35  37.0   0.0  334.00  23.31   83.50   227.12
Maximum:                        12.25  51.0  11.0  598.90  46.55  149.73   419.23

The total employees processed was: 5


 *** End of Program ***
https://ideone.com/Xrjvqo
language:
C (gcc 8.3)
created:
5 days ago
visibility:
public

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