fork download
copy 
  1. //Devin Scheu                                  CS1A                                    Chapter 9, P. 537, #2
  2. //
  3. /**************************************************************
  4. *
  5. * PROCESS AND ANALYZE TEST SCORES
  6. * ____________________________________________________________
  7. * This program determines the sorted list of test scores and
  8. * their average based on a user-defined number of scores.
  9. * ____________________________________________________________
  10. * INPUT
  11. * numScores : The number of test scores to process
  12. * testScores : The test scores entered by the user
  13. *
  14. * OUTPUT
  15. * sortedScores : The sorted list of test scores
  16. * averageScore : The average of the test scores
  17. *
  18. **************************************************************/
  19.  
  20. #include <iostream>
  21. #include <iomanip>
  22.  
  23. using namespace std;
  24.  
  25. // Function to swap two integers using pointers
  26. void swap(int* a, int* b) {
  27.     int temp = *a;
  28.     *a = *b;
  29.     *b = temp;
  30. }
  31.  
  32. // Function to perform bubble sort using pointers
  33. void bubbleSort(int* arr, int size) {
  34.     for (int i = 0; i < size - 1; i++) {
  35.         for (int j = 0; j < size - i - 1; j++) {
  36.             if (*(arr + j) > *(arr + j + 1)) {
  37.                 swap((arr + j), (arr + j + 1));
  38.             }
  39.         }
  40.     }
  41. }
  42.  
  43. // Function to calculate average using pointers
  44. double calculateAverage(int* arr, int size) {
  45.     double sum = 0;
  46.     for (int i = 0; i < size; i++) {
  47.         sum += *(arr + i);
  48.     }
  49.     return sum / size;
  50. }
  51.  
  52. int main () {
  53.  
  54. 	//Variable Declarations
  55. 	int numScores;                //INPUT      - The number of test scores to process
  56. 	int* testScores;              //INPUT      - The test scores entered by the user
  57. 	double averageScore;          //OUTPUT     - The average of the test scores
  58. 	int* sortedScores;            //OUTPUT     - The sorted list of test scores
  59.  
  60. 	//Prompt for Input
  61. 	cout << "Enter the number of test scores: ";
  62. 	cin >> numScores;
  63. 	cout << numScores << endl;
  64.  
  65. 	//Allocate dynamic array
  66. 	testScores = new int[numScores];
  67.  
  68. 	//Input Test Scores with EOF check
  69. 	int validScores = 0;
  70. 	for (int i = 0; i < numScores && cin >> *(testScores + i); i++) {
  71. 		while (*(testScores + i) < 0) {
  72. 			cout << "\nError: Please enter a non-negative score: ";
  73. 			cin >> *(testScores + i);
  74. 		}
  75. 		cout << *(testScores + i) << endl;
  76. 		validScores++;
  77. 	}
  78.  
  79. 	//Adjust numScores to actual valid inputs if less than expected
  80. 	if (validScores < numScores) {
  81. 		numScores = validScores;
  82. 	}
  83.  
  84. 	//Create copy for sorting
  85. 	sortedScores = new int[numScores];
  86. 	for (int i = 0; i < numScores; i++) {
  87. 		*(sortedScores + i) = *(testScores + i);
  88. 	}
  89.  
  90. 	//Sort Scores
  91. 	bubbleSort(sortedScores, numScores);
  92.  
  93. 	//Calculate Average
  94. 	averageScore = calculateAverage(testScores, numScores);
  95.  
  96. 	//Separator and Output Section
  97. 	cout << "-------------------------------------------------------" << endl;
  98. 	cout << "OUTPUT:" << endl;
  99.  
  100. 	//Output Result
  101. 	cout << fixed << setprecision(2);
  102. 	cout << left << setw(25) << "Sorted Scores:" << right;
  103. 	for (int i = 0; i < numScores; i++) {
  104. 		cout << *(sortedScores + i);
  105. 		if (i < numScores - 1) cout << ", ";
  106. 	}
  107. 	cout << endl;
  108.  
  109. 	cout << left << setw(25) << "Average Score:" << right << setw(15) << averageScore << endl;
  110.  
  111. 	//Clean up memory
  112. 	delete[] testScores;
  113. 	delete[] sortedScores;
  114.  
  115. } //end of main()
Success #stdin #stdout 0.01s 5300KB
comments (?)
stdin
copy 
87
34
54
21
17
99
62
stdout
copy 
Enter the number of test scores: 87
34
54
21
17
99
62
-------------------------------------------------------
OUTPUT:
Sorted Scores:           17, 21, 34, 54, 62, 99
Average Score:                     47.83
https://ideone.com/uDZx4N
language:
C++ (gcc 8.3)
created:
9 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!