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  1. //Devin Scheu                                  CS1A                                    Chapter 9, P. 538, #3
  2. //
  3. /**************************************************************
  4. *
  5. * PROCESS AND ANALYZE TEST SCORES WITH LOWEST DROPPED
  6. * ____________________________________________________________
  7. * This program determines the sorted list of test scores and
  8. * their average, excluding the lowest score.
  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 excluding the lowest
  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 excluding lowest score using pointers
  44. double calculateAverageExcludingLowest(int* arr, int size) {
  45.     if (size <= 0) return 0.0;
  46.     double sum = 0;
  47.     int* minPtr = arr;
  48.     for (int i = 0; i < size; i++) {
  49.         if (*(arr + i) < *minPtr) {
  50.             minPtr = arr + i;
  51.         }
  52.         sum += *(arr + i);
  53.     }
  54.     return (sum - *minPtr) / (size - 1);
  55. }
  56.  
  57. int main () {
  58.  
  59. 	//Variable Declarations
  60. 	int numScores;                //INPUT      - The number of test scores to process
  61. 	int* testScores;              //INPUT      - The test scores entered by the user
  62. 	double averageScore;          //OUTPUT     - The average of the test scores excluding the lowest
  63. 	int* sortedScores;            //OUTPUT     - The sorted list of test scores
  64.  
  65. 	//Prompt for Input
  66. 	cout << "Enter the number of test scores: ";
  67. 	cin >> numScores;
  68. 	cout << numScores << endl;
  69.  
  70. 	//Allocate dynamic array
  71. 	testScores = new int[numScores];
  72.  
  73. 	//Input Test Scores with EOF check
  74. 	int validScores = 0;
  75. 	for (int i = 0; i < numScores && cin >> *(testScores + i); i++) {
  76. 		while (*(testScores + i) < 0) {
  77. 			cout << "\nError: Please enter a non-negative score: ";
  78. 			cin >> *(testScores + i);
  79. 		}
  80. 		cout << *(testScores + i) << endl;
  81. 		validScores++;
  82. 	}
  83.  
  84. 	//Adjust numScores to actual valid inputs if less than expected
  85. 	if (validScores < numScores) {
  86. 		numScores = validScores;
  87. 	}
  88.  
  89. 	//Create copy for sorting
  90. 	sortedScores = new int[numScores];
  91. 	for (int i = 0; i < numScores; i++) {
  92. 		*(sortedScores + i) = *(testScores + i);
  93. 	}
  94.  
  95. 	//Sort Scores
  96. 	bubbleSort(sortedScores, numScores);
  97.  
  98. 	//Calculate Average Excluding Lowest
  99. 	averageScore = calculateAverageExcludingLowest(testScores, numScores);
  100.  
  101. 	//Separator and Output Section
  102. 	cout << "-------------------------------------------------------" << endl;
  103. 	cout << "OUTPUT:" << endl;
  104.  
  105. 	//Output Result
  106. 	cout << fixed << setprecision(2);
  107. 	cout << left << setw(25) << "Sorted Scores:" << right;
  108. 	for (int i = 0; i < numScores; i++) {
  109. 		cout << *(sortedScores + i);
  110. 		if (i < numScores - 1) cout << ", ";
  111. 	}
  112. 	cout << endl;
  113.  
  114. 	cout << left << setw(25) << "Average Score (Lowest Dropped):" << right << setw(15) << averageScore << endl;
  115.  
  116. 	//Clean up memory
  117. 	delete[] testScores;
  118. 	delete[] sortedScores;
  119.  
  120. } //end of main()
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin 
87
34
54
21
17
99
62
stdout 
Enter the number of test scores: 87
34
54
21
17
99
62
-------------------------------------------------------
OUTPUT:
Sorted Scores:           17, 21, 34, 54, 62, 99
Average Score (Lowest Dropped):          54.00
https://ideone.com/Swg1Jq
language:
C++ (gcc 8.3)
created:
9 days ago
visibility:
public

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