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  1. //Charlotte Davies-Kiernan              CS1A              Chapter 9 P. 537 #2
  2. //
  3. /******************************************************************************
  4.  * 
  5.  * Compute Test Average
  6.  * ____________________________________________________________________________
  7.  * This program will allocate an array not accepting any negative scores and 
  8.  * then sorts the scores in ascending order. The program will then compute the
  9.  * average.
  10.  * ____________________________________________________________________________
  11.  * Input
  12.  *   numScores      :Number of tests
  13.  *   scores         :Scores on each of the tests
  14.  * Output
  15.  *   sortScores     :Function that sorts the test scores in ascending order
  16.  *   averageScore   :Function that computes the average of the scores entered
  17.  *****************************************************************************/
  18. #include <iostream>
  19. #include <iomanip>
  20. using namespace std;
  21.  
  22. //Function Prototype
  23. void sortScores(double* scores, int size);
  24. double averageScore(double* scores, int size);
  25.  
  26. int main() {
  27. //Data Dictionary
  28.    int numScores;
  29.    double* scores;
  30.    double avg;
  31.  
  32. //Prompt User
  33. cout << "How many test scores will you enter? " << endl;
  34. cin >> numScores;
  35.  
  36. //Input Validation
  37. while(numScores <= 0) {
  38. 	cout << "ERROR: Enter a positive number of test scores: " << endl;
  39. 	cin >> numScores;
  40. }
  41. scores = new double[numScores];
  42.  
  43. //Input Scores with Validation
  44. for(int i = 0; i < numScores; i++) {
  45. 	cout << "Enter score #" << (i + 1) << ": " << endl;
  46. 	cin >> *(scores + i);
  47.  
  48. //Validate!
  49.     while(*(scores + i) < 0) {
  50.     cout << "ERROR: Score cannot be negative. Re-enter score #" << (i + 1);
  51.     cout << ": " << endl;
  52.     cin >> *(scores + i);	
  53.     }
  54. }
  55.  
  56. //Sort Scores
  57. sortScores(scores, numScores);
  58.  
  59. //Calculate Average
  60. avg = averageScore(scores, numScores);
  61.  
  62. //Display!
  63. cout << "Sorted Test Scores: " << endl;
  64. for(int i = 0; i < numScores; i++) {
  65. 	cout << *(scores + i) << " ";
  66. }
  67. cout << endl;
  68. cout << "Average Score: " << fixed << setprecision(2) << avg << endl;
  69.  
  70. //Free memory
  71. delete [] scores;
  72.  
  73. 	return 0;
  74. }
  75.  
  76. //Function Definitions
  77. void sortScores(double* scores, int size) {
  78. 	for(int i = 0; i < size - 1; i++){
  79. 		for(int j = i + 1; j < size; j++){
  80. 			if(*(scores + j) < *(scores + i)){
  81. 				double temp = *(scores + i);
  82. 				*(scores + i) = *(scores + j);
  83. 				*(scores + j) = temp;
  84. 			}
  85. 		}
  86. 	}
  87. }
  88.  
  89. double averageScore(double* scores, int size){
  90. 	double total = 0.0;
  91. 	for(int i = 0; i < size; i++){
  92. 		total += *(scores + i);
  93. 	}
  94. 	return total/size;
  95. }
Success #stdin #stdout 0.01s 5292KB
comments (?)
stdin
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5
75.5
45
89
96
87
stdout
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How many test scores will you enter? 
Enter score #1: 
Enter score #2: 
Enter score #3: 
Enter score #4: 
Enter score #5: 
Sorted Test Scores: 
45 75.5 87 89 96 
Average Score: 78.50
https://ideone.com/LT9xSK
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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