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  1. // necessary header files
  2. #include <stdio.h>
  3. #include <string.h>
  4. #include <ctype.h>
  5.  
  6. // define constants
  7. #define SIZE 5
  8. #define STD_HOURS 40.0
  9. #define OT_RATE 1.5
  10. #define MA_TAX_RATE 0.05
  11. #define NH_TAX_RATE 0.0
  12. #define VT_TAX_RATE 0.06
  13. #define CA_TAX_RATE 0.07
  14. #define DEFAULT_TAX_RATE 0.08
  15. #define NAME_SIZE 20
  16. #define TAX_STATE_SIZE 3
  17. #define FED_TAX_RATE 0.25
  18. #define FIRST_NAME_SIZE 10
  19. #define LAST_NAME_SIZE 10
  20.  
  21. // Define a structure type to store an employee name
  22. struct name
  23. {
  24.     char firstName[FIRST_NAME_SIZE];
  25.     char lastName [LAST_NAME_SIZE];
  26. };
  27.  
  28. // Define a structure type to pass employee data between functions
  29. struct employee
  30. {
  31.     struct name empName;
  32.     char taxState [TAX_STATE_SIZE];
  33.     long int clockNumber;
  34.     float wageRate;
  35.     float hours;
  36.     float overtimeHrs;
  37.     float grossPay;
  38.     float stateTax;
  39.     float fedTax;
  40.     float netPay;
  41. };
  42.  
  43. // this structure type defines the totals of all floating point items
  44. struct totals
  45. {
  46.     float total_wageRate;
  47.     float total_hours;
  48.     float total_overtimeHrs;
  49.     float total_grossPay;
  50.     float total_stateTax;
  51.     float total_fedTax;
  52.     float total_netPay;
  53. };
  54.  
  55. // this structure type defines the min and max values of all floating point items
  56. struct min_max
  57. {
  58.     float min_wageRate;
  59.     float min_hours;
  60.     float min_overtimeHrs;
  61.     float min_grossPay;
  62.     float min_stateTax;
  63.     float min_fedTax;
  64.     float min_netPay;
  65.     float max_wageRate;
  66.     float max_hours;
  67.     float max_overtimeHrs;
  68.     float max_grossPay;
  69.     float max_stateTax;
  70.     float max_fedTax;
  71.     float max_netPay;
  72. };
  73.  
  74. // function prototypes
  75. void getHours (struct employee *emp_ptr, int theSize);
  76. void printEmp (struct employee *emp_ptr, int theSize);
  77. void calcEmployeeTotals (struct employee *emp_ptr,
  78.                          struct totals *emp_totals_ptr,
  79.                          int theSize);
  80. void calcEmployeeMinMax (struct employee *emp_ptr,
  81.                          struct min_max *emp_minMax_ptr,
  82.                          int theSize);
  83. void printHeader (void);
  84.  
  85. // Transition these functions to pointer references
  86.  
  87. // Transitioned from array to pointer references
  88. void calcOvertimeHrs (struct employee *emp_ptr, int theSize)
  89. {
  90.     int i;  // loop index
  91.     for (i = 0; i < theSize; ++i)
  92.     {  
  93.         if (emp_ptr->hours >= STD_HOURS)
  94.             emp_ptr->overtimeHrs = emp_ptr->hours - STD_HOURS;
  95.         else
  96.             emp_ptr->overtimeHrs = 0;
  97.         emp_ptr++; // move to next employee
  98.     }
  99. }
  100.  
  101. // Transitioned from array to pointer references
  102. void calcGrossPay (struct employee *emp_ptr, int theSize)
  103. {
  104.     int i;                
  105.     float theNormalPay;   
  106.     float theOvertimePay; 
  107.  
  108.     for (i = 0; i < theSize; ++i)
  109.     {
  110.         theNormalPay = emp_ptr->wageRate * (emp_ptr->hours - emp_ptr->overtimeHrs);
  111.         theOvertimePay = emp_ptr->overtimeHrs * (OT_RATE * emp_ptr->wageRate);
  112.         emp_ptr->grossPay = theNormalPay + theOvertimePay;
  113.  
  114.         emp_ptr++; // move to next employee
  115.     }
  116. }
  117.  
  118. // Transitioned from array to pointer references
  119. void calcStateTax (struct employee *emp_ptr, int theSize)
  120. {
  121.     int i;
  122.     for (i = 0; i < theSize; ++i)
  123.     {
  124.         // Ensure tax state letters are uppercase
  125.         if (islower(emp_ptr->taxState[0]))
  126.             emp_ptr->taxState[0] = toupper(emp_ptr->taxState[0]);
  127.         if (islower(emp_ptr->taxState[1]))
  128.             emp_ptr->taxState[1] = toupper(emp_ptr->taxState[1]);
  129.  
  130.         if (strcmp(emp_ptr->taxState, "MA") == 0)
  131.             emp_ptr->stateTax = emp_ptr->grossPay * MA_TAX_RATE;
  132.         else if (strcmp(emp_ptr->taxState, "VT") == 0)
  133.             emp_ptr->stateTax = emp_ptr->grossPay * VT_TAX_RATE;
  134.         else if (strcmp(emp_ptr->taxState, "NH") == 0)
  135.             emp_ptr->stateTax = emp_ptr->grossPay * NH_TAX_RATE;
  136.         else if (strcmp(emp_ptr->taxState, "CA") == 0)
  137.             emp_ptr->stateTax = emp_ptr->grossPay * CA_TAX_RATE;
  138.         else
  139.             emp_ptr->stateTax = emp_ptr->grossPay * DEFAULT_TAX_RATE;
  140.  
  141.         emp_ptr++; // move to next employee
  142.     }
  143. }
  144.  
  145. // Transitioned from array to pointer references
  146. void calcFedTax (struct employee *emp_ptr, int theSize)
  147. {
  148.     int i;
  149.     for (i = 0; i < theSize; ++i)
  150.     {
  151.         emp_ptr->fedTax = emp_ptr->grossPay * FED_TAX_RATE;
  152.         emp_ptr++; // move to next employee
  153.     }
  154. }
  155.  
  156. // Transitioned from array to pointer references
  157. void calcNetPay (struct employee *emp_ptr, int theSize)
  158. {
  159.     int i;
  160.     float theTotalTaxes;
  161.     for (i = 0; i < theSize; ++i)
  162.     {
  163.         theTotalTaxes = emp_ptr->stateTax + emp_ptr->fedTax;
  164.         emp_ptr->netPay = emp_ptr->grossPay - theTotalTaxes;
  165.  
  166.         emp_ptr++; // move to next employee
  167.     }
  168. }
  169.  
  170. // Transitioned printEmpStatistics to use pointer references
  171. void printEmpStatistics (struct totals *emp_totals_ptr, 
  172.                          struct min_max *emp_MinMax_ptr,
  173.                          int theSize)
  174. {
  175.     printf("\n--------------------------------------------------------------");
  176.     printf("-------------------");
  177.     printf("\nTotals:                         %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  178.            emp_totals_ptr->total_wageRate,
  179.            emp_totals_ptr->total_hours,
  180.            emp_totals_ptr->total_overtimeHrs,
  181.            emp_totals_ptr->total_grossPay,
  182.            emp_totals_ptr->total_stateTax,
  183.            emp_totals_ptr->total_fedTax,
  184.            emp_totals_ptr->total_netPay);
  185.  
  186.     if (theSize > 0)
  187.     {
  188.         printf("\nAverages:                       %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  189.                emp_totals_ptr->total_wageRate/theSize,
  190.                emp_totals_ptr->total_hours/theSize,
  191.                emp_totals_ptr->total_overtimeHrs/theSize,
  192.                emp_totals_ptr->total_grossPay/theSize,
  193.                emp_totals_ptr->total_stateTax/theSize,
  194.                emp_totals_ptr->total_fedTax/theSize,
  195.                emp_totals_ptr->total_netPay/theSize);
  196.     }
  197.  
  198.     printf("\nMinimum:                        %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  199.            emp_MinMax_ptr->min_wageRate,
  200.            emp_MinMax_ptr->min_hours,
  201.            emp_MinMax_ptr->min_overtimeHrs,
  202.            emp_MinMax_ptr->min_grossPay,
  203.            emp_MinMax_ptr->min_stateTax,
  204.            emp_MinMax_ptr->min_fedTax,
  205.            emp_MinMax_ptr->min_netPay);
  206.  
  207.     printf("\nMaximum:                        %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f",
  208.            emp_MinMax_ptr->max_wageRate,
  209.            emp_MinMax_ptr->max_hours,
  210.            emp_MinMax_ptr->max_overtimeHrs,
  211.            emp_MinMax_ptr->max_grossPay,
  212.            emp_MinMax_ptr->max_stateTax,
  213.            emp_MinMax_ptr->max_fedTax,
  214.            emp_MinMax_ptr->max_netPay);
  215. }
  216.  
  217. // main function
  218. int main ()
  219. {
  220.     // Initialize employee data
  221.     struct employee employeeData[SIZE] = {
  222.         { {"Connie", "Cobol"}, "MA", 98401, 10.60},
  223.         { {"Mary", "Apl"}, "NH", 526488, 9.75 },
  224.         { {"Frank", "Fortran"}, "VT", 765349, 10.50 },
  225.         { {"Jeff", "Ada"}, "NY", 34645, 12.25 },
  226.         { {"Anton", "Pascal"}, "CA", 127615, 8.35 }
  227.     };
  228.  
  229.     // Setup totals and min/max structures and their pointers
  230.     struct totals employeeTotals  = {0,0,0,0,0,0,0};
  231.     struct totals *emp_totals_ptr = &employeeTotals;
  232.  
  233.     struct min_max employeeMinMax = {0,0,0,0,0,0,0,0,0,0,0,0,0,0};
  234.     struct min_max *emp_minMax_ptr = &employeeMinMax;
  235.  
  236.     // Prompt for hours worked (with scanf return value checked)
  237.     getHours(employeeData, SIZE);
  238.  
  239.     // Calculate various pay components
  240.     calcOvertimeHrs(employeeData, SIZE);
  241.     calcGrossPay(employeeData, SIZE);
  242.     calcStateTax(employeeData, SIZE);
  243.     calcFedTax(employeeData, SIZE);
  244.     calcNetPay(employeeData, SIZE);
  245.  
  246.     // Calculate running totals and min/max values
  247.     calcEmployeeTotals(employeeData, emp_totals_ptr, SIZE);
  248.     calcEmployeeMinMax(employeeData, emp_minMax_ptr, SIZE);
  249.  
  250.     // Print header and employee data
  251.     printHeader();
  252.     printEmp(employeeData, SIZE);
  253.  
  254.     // Print overall statistics using pointer references
  255.     printEmpStatistics(emp_totals_ptr, emp_minMax_ptr, SIZE);
  256.  
  257.     return 0;
  258. }
  259.  
  260. // Function: getHours
  261. // Purpose: Reads hours worked from the user for each employee.
  262. void getHours (struct employee *emp_ptr, int theSize) 
  263. { 
  264.     int i;
  265.     for (i = 0; i < theSize; ++i)
  266.     {
  267.         printf("\nEnter hours worked by emp # %06li: ", emp_ptr->clockNumber); 
  268.         if (scanf("%f", &emp_ptr->hours) != 1)
  269.         {
  270.             printf("Error reading hours.\n");
  271.         }
  272.         emp_ptr++;
  273.     }
  274. }
  275.  
  276. // Function: printHeader
  277. // Purpose: Prints the initial table header.
  278. void printHeader (void) 
  279. { 
  280.     printf ("\n\n*** Pay Calculator ***\n");
  281.     printf("\n--------------------------------------------------------------");
  282.     printf("-------------------");
  283.     printf("\nName                Tax  Clock# Wage   Hours  OT   Gross ");
  284.     printf("  State  Fed      Net");
  285.     printf("\n                   State                           Pay   ");
  286.     printf("  Tax    Tax      Pay");
  287.     printf("\n--------------------------------------------------------------");
  288.     printf("-------------------");
  289. }
  290.  
  291. // Function: printEmp
  292. // Purpose: Prints out the information for each employee.
  293. void printEmp (struct employee *emp_ptr, int theSize)
  294. {
  295.     int i;
  296.     char name[FIRST_NAME_SIZE + LAST_NAME_SIZE + 1];
  297.  
  298.     for (i = 0; i < theSize; ++i)
  299.     {
  300.         strcpy(name, emp_ptr->empName.firstName);
  301.         strcat(name, " ");
  302.         strcat(name, emp_ptr->empName.lastName);
  303.  
  304.         printf("\n%-20.20s %-2.2s  %06li %5.2f  %4.1f  %4.1f %7.2f %6.2f %7.2f %8.2f",
  305.                name, emp_ptr->taxState, emp_ptr->clockNumber, 
  306.                emp_ptr->wageRate, emp_ptr->hours,
  307.                emp_ptr->overtimeHrs, emp_ptr->grossPay, 
  308.                emp_ptr->stateTax, emp_ptr->fedTax, 
  309.                emp_ptr->netPay);
  310.  
  311.         emp_ptr++;
  312.     }
  313. }
  314.  
  315. // Function: calcEmployeeTotals
  316. // Purpose: Sums up the floating point members for all employees.
  317. void calcEmployeeTotals (struct employee *emp_ptr,
  318.                          struct totals *emp_totals_ptr,
  319.                          int theSize)
  320. {
  321.     int i;
  322.     for (i = 0; i < theSize; ++i)
  323.     {
  324.         emp_totals_ptr->total_wageRate += emp_ptr->wageRate;
  325.         emp_totals_ptr->total_hours += emp_ptr->hours;
  326.         emp_totals_ptr->total_overtimeHrs += emp_ptr->overtimeHrs;
  327.         emp_totals_ptr->total_grossPay += emp_ptr->grossPay;
  328.         emp_totals_ptr->total_stateTax += emp_ptr->stateTax;
  329.         emp_totals_ptr->total_fedTax += emp_ptr->fedTax;
  330.         emp_totals_ptr->total_netPay += emp_ptr->netPay;
  331.  
  332.         emp_ptr++;
  333.     }
  334. }
  335.  
  336. // Function: calcEmployeeMinMax
  337. // Purpose: Updates the min and max values for each floating point member.
  338. void calcEmployeeMinMax (struct employee *emp_ptr,
  339.                          struct min_max *emp_minMax_ptr,
  340.                          int theSize)
  341. {
  342.     int i;
  343.     // Initialize min and max with first employee's data
  344.     emp_minMax_ptr->min_wageRate = emp_ptr->wageRate; 
  345.     emp_minMax_ptr->min_hours = emp_ptr->hours;
  346.     emp_minMax_ptr->min_overtimeHrs = emp_ptr->overtimeHrs; 
  347.     emp_minMax_ptr->min_grossPay = emp_ptr->grossPay;
  348.     emp_minMax_ptr->min_stateTax = emp_ptr->stateTax;
  349.     emp_minMax_ptr->min_fedTax = emp_ptr->fedTax;
  350.     emp_minMax_ptr->min_netPay = emp_ptr->netPay;
  351.  
  352.     emp_minMax_ptr->max_wageRate = emp_ptr->wageRate; 
  353.     emp_minMax_ptr->max_hours = emp_ptr->hours;
  354.     emp_minMax_ptr->max_overtimeHrs = emp_ptr->overtimeHrs; 
  355.     emp_minMax_ptr->max_grossPay = emp_ptr->grossPay;
  356.     emp_minMax_ptr->max_stateTax = emp_ptr->stateTax;
  357.     emp_minMax_ptr->max_fedTax = emp_ptr->fedTax;
  358.     emp_minMax_ptr->max_netPay = emp_ptr->netPay;
  359.  
  360.     for (i = 1; i < theSize; ++i)
  361.     {
  362.         emp_ptr++;
  363.  
  364.         if (emp_ptr->wageRate < emp_minMax_ptr->min_wageRate)
  365.             emp_minMax_ptr->min_wageRate = emp_ptr->wageRate;
  366.         if (emp_ptr->wageRate > emp_minMax_ptr->max_wageRate)
  367.             emp_minMax_ptr->max_wageRate = emp_ptr->wageRate;
  368.  
  369.         if (emp_ptr->hours < emp_minMax_ptr->min_hours)
  370.             emp_minMax_ptr->min_hours = emp_ptr->hours;
  371.         if (emp_ptr->hours > emp_minMax_ptr->max_hours)
  372.             emp_minMax_ptr->max_hours = emp_ptr->hours;
  373.  
  374.         if (emp_ptr->overtimeHrs < emp_minMax_ptr->min_overtimeHrs)
  375.             emp_minMax_ptr->min_overtimeHrs = emp_ptr->overtimeHrs;
  376.         if (emp_ptr->overtimeHrs > emp_minMax_ptr->max_overtimeHrs)
  377.             emp_minMax_ptr->max_overtimeHrs = emp_ptr->overtimeHrs;
  378.  
  379.         if (emp_ptr->grossPay < emp_minMax_ptr->min_grossPay)
  380.             emp_minMax_ptr->min_grossPay = emp_ptr->grossPay;
  381.         if (emp_ptr->grossPay > emp_minMax_ptr->max_grossPay)
  382.             emp_minMax_ptr->max_grossPay = emp_ptr->grossPay;
  383.  
  384.         if (emp_ptr->stateTax < emp_minMax_ptr->min_stateTax)
  385.             emp_minMax_ptr->min_stateTax = emp_ptr->stateTax;
  386.         if (emp_ptr->stateTax > emp_minMax_ptr->max_stateTax)
  387.             emp_minMax_ptr->max_stateTax = emp_ptr->stateTax;
  388.  
  389.         if (emp_ptr->fedTax < emp_minMax_ptr->min_fedTax)
  390.             emp_minMax_ptr->min_fedTax = emp_ptr->fedTax;
  391.         if (emp_ptr->fedTax > emp_minMax_ptr->max_fedTax)
  392.             emp_minMax_ptr->max_fedTax = emp_ptr->fedTax;
  393.  
  394.         if (emp_ptr->netPay < emp_minMax_ptr->min_netPay)
  395.             emp_minMax_ptr->min_netPay = emp_ptr->netPay;
  396.         if (emp_ptr->netPay > emp_minMax_ptr->max_netPay)
  397.             emp_minMax_ptr->max_netPay = emp_ptr->netPay;
  398.     }
  399. }
  400.  
Success #stdin #stdout 0s 5292KB
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Enter hours worked by emp # 098401: 
Enter hours worked by emp # 526488: 
Enter hours worked by emp # 765349: 
Enter hours worked by emp # 034645: 
Enter hours worked by emp # 127615: 

*** 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   0.00   83.50   227.12
Maximum:                        12.25  51.0  11.0  598.90  46.55  149.73   419.23
https://ideone.com/q09cGq
51.0
42.5
37.0
45.0
40.0
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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