Question

Create a program that calculates the average of 3 test scores. Make use of an array to store the integer scores.

const int size = 3;
int testScores[size];

Send this array to a function that actually calculates and returns the average.

1. Tell the user what the program does.
2. Prompt the user to enter the integer scores. ( Use a for loop to do this. )
3. Create and implement a function with prototype:

double average( int a[], int size);

4. Output the results in the main function.
5. Ask the user if he wishes to run the program again.

// I need help fixing my code, it might be a math error

//c++ code

#include <iostream>
using namespace std;

//Function Prototypes
bool runAgain(void);

double average(int a[], int size);

int main() {

   //Make an array of .....
   const int size = 3;
   int testScores[size];
  

   cout << "This program calcuates and returns the average of 3 test scores!" << endl;
  
  
   do {
       //User to populate the array
       for (int i = 0; i < size; i++) {
           cout << "Enter a score: ";
           cin >> testScores[i];
       }

       cout << endl;

       cout << average(testScores, size) << endl;

       } while (runAgain());
   }

// Function Impplementation
double average(int a[], int size) {
   for (int i = 0; i < size; i++) {
      
       return a[i] / size;
   }
}
   bool runAgain(void) {
           char userResponse;

           cout << "\nWould you like to run again (y or n): ";
           cin >> userResponse;
           cin.ignore(); // to clean up the input stream

           if (userResponse == 'y' || userResponse == 'Y')
               return(true);

           return(false);
       }

Answer 1

#include <iostream>
using namespace std;
//Function Prototypes
bool runAgain(void);
double average(int a[], int size);

int main() {
   const int size = 3;
   int testScores[size];
 
   cout << "This program calcuates and returns the average of 3 test scores!" << endl;
 
  
   do {
       //User to populate the array
       for (int i = 0; i < size; i++) {
           cout << "Enter a score: ";
           cin >> testScores[i];
       }
       cout << endl;
       cout << average(testScores, size) << endl;

       } while (runAgain());

    
}


// Function Impplementation
double average(int a[], int size) {
    double sum=0;
   for (int i = 0; i < size; i++) {
      sum+=a[i];
   }
   return sum/size;
}
bool runAgain(void) {
       char userResponse;
       cout << "\nWould you like to run again (y or n): ";
       cin >> userResponse;
       cin.ignore(); // to clean up the input stream
       return (userResponse == 'y' || userResponse == 'Y');
}

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