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  1. //Diego Martinez                         CSC5               Chapter 9, P.537, #2
  2. /*******************************************************************************
  3. *  CALCULATING AND SORTING TEST SCORES DYNAMICALLY
  4. * ______________________________________________________________________________
  5. * This program dynamically allocates an array of test scores based on user input,
  6. * sorts the scores in ascending order using a sorting function, and calculates
  7. * the average score using a separate function. Pointer notation is used throughout
  8. * the program whenever possible.
  9. * 
  10. * Computation is based on the Formula:
  11. *	
  12. *	Average = (sum of all test scores) / (number of test scores)
  13. * 
  14. *______________________________________________________________________________
  15. * INPUT
  16. *		
  17. *	number of test scores (size of dynamic array)
  18. *	test scores entered by the user (non-negative values)
  19. *	
  20. * OUTPUT
  21. *	
  22. *	sorted list of test scores (ascending order)
  23. *	average of all test scores
  24. *	
  25. *******************************************************************************/
  26. #include <iostream>
  27. using namespace std;
  28.  
  29. // Function prototypes
  30. void sortScores(double* scores, int size);
  31. double calculateAverage(double* scores, int size);
  32.  
  33. int main()
  34. {
  35.     double* scores;
  36.     int size;
  37.  
  38.     // Ask user for number of test scores
  39.     cout << "Enter number of test scores: ";
  40.     cin >> size;
  41.  
  42.     // Dynamically allocate array
  43.     scores = new double[size];
  44.  
  45.     // Input scores with validation
  46.     for (int i = 0; i < size; i++)
  47.     {
  48.         cout << "Enter score " << (i + 1) << ": ";
  49.         cin >> *(scores + i);
  50.  
  51.         // Input validation: no negative numbers
  52.         while (*(scores + i) < 0)
  53.         {
  54.             cout << "Invalid input. Enter a non-negative score: ";
  55.             cin >> *(scores + i);
  56.         }
  57.     }
  58.  
  59.     // Sort scores
  60.     sortScores(scores, size);
  61.  
  62.     // Calculate average
  63.     double average = calculateAverage(scores, size);
  64.  
  65.     // Display sorted scores
  66.     cout << "\nSorted Test Scores:" << endl;
  67.     for (int i = 0; i < size; i++)
  68.     {
  69.         cout << *(scores + i) << " ";
  70.     }
  71.  
  72.     // Display average
  73.     cout << "\n\nAverage Score: " << average << endl;
  74.  
  75.     // Free memory
  76.     delete[] scores;
  77.  
  78.     return 0;
  79. }
  80.  
  81. // Function to sort scores (ascending order using bubble sort)
  82. void sortScores(double* scores, int size)
  83. {
  84.     double temp;
  85.  
  86.     for (int i = 0; i < size - 1; i++)
  87.     {
  88.         for (int j = 0; j < size - i - 1; j++)
  89.         {
  90.             if (*(scores + j) > *(scores + j + 1))
  91.             {
  92.                 temp = *(scores + j);
  93.                 *(scores + j) = *(scores + j + 1);
  94.                 *(scores + j + 1) = temp;
  95.             }
  96.         }
  97.     }
  98. }
  99.  
  100. // Function to calculate average
  101. double calculateAverage(double* scores, int size)
  102. {
  103.     double sum = 0;
  104.  
  105.     for (int i = 0; i < size; i++)
  106.     {
  107.         sum += *(scores + i);
  108.     }
  109.  
  110.     return sum / size;
  111. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
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3
85
90
78
stdout
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Enter number of test scores: Enter score 1: Enter score 2: Enter score 3: 
Sorted Test Scores:
78 85 90 

Average Score: 84.3333
https://ideone.com/MVgRWs
CALCULATING AND SORTING TEST SCORES DYNAMICALLY Ch 9, P.537, #2
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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