Read the function definitions of the two functions:“compute_st_ave†and “compute_quiz_aveâ€.
Write a function that calculates the average of studentaverages. (Student averages are stored in st_ave [5] array).Include a statement to print this average on the screen.
Declare this function above the “main†function where otherfunctions are declared.
In the main program, invoke this function.
//Reads quiz scores for each student into the two-dimensionalarray grade //(but the input code is not shown in this display).Computes the average //score for each student and the average scorefor each quiz. Displays //the quiz scores and the averages.
#include “stdafx.hâ€
#include
#include
const int NUMBER_STUDENTS = 5, NUMBER_QUIZZES = 3;
void compute_st_ave(const int grade[][NUMBER_QUIZZES], doublest_ave[]);
//Precondition: Global constants NUMBER_STUDENTS andNUMBER_QUIZZES
//are the dimensions of the array grade. Each of the indexedvariables
//grade[st_num-1, quiz_num-1] contains the score for studentst_num on //quiz quiz_num.
//Postcondition: Each st_ave[st_num-1] contains the average forstudent
//number stu_num.
void compute_quiz_ave(const int grade[][NUMBER_QUIZZES], doublequiz_ave[]);
//Precondition: Global constants NUMBER_STUDENTS andNUMBER_QUIZZES
//are the dimensions of the array grade. Each of the indexedvariables
//grade[st_num-1, quiz_num-1] contains the score for studentst_num on //quiz quiz_num.
//Postcondition: Each quiz_ave[quiz_num-1] contains the averagefor quiz //number quiz_num.
void display(const int grade[][NUMBER_QUIZZES], const doublest_ave[], const double quiz_ave[]);
//Precondition: Global constants NUMBER_STUDENTS andNUMBER_QUIZZES are //the dimensions of the array grade. Each of theindexed variables //grade[st_num-1, quiz_num-1] contains the scorefor student st_num on //quiz quiz_num. Each st_ave[st_num-1]contains the average for student //stu_num. Each quiz_ave[quiz_num-1] contains the average for quiz //number quiz_num.
//Postcondition: All the data in grade, st_ave, and quiz_ave hasbeen //output.
int main( )
{
   using namespace std;
   intgrade[NUMBER_STUDENTS][NUMBER_QUIZZES];
   double st_ave[NUMBER_STUDENTS];
   double quiz_ave[NUMBER_QUIZZES];
//The code for filling the array grade goes here.
   for (int st_num = 1; st_num <=NUMBER_STUDENTS; st_num++)
   {
       for (int quiz_num =1; quiz_num <= NUMBER_QUIZZES; quiz_num++)
           {cout << “Enter the grade [†<< st_num<<â€][“<           =â€;
           cin >> grade[st_num -1][quiz_num -1];
           }  Â
   }
   compute_st_ave(grade, st_ave);
   compute_quiz_ave(grade, quiz_ave);
   display(grade, st_ave, quiz_ave);
   system (“pauseâ€);
   return 0;
}
void compute_st_ave(const int grade[][NUMBER_QUIZZES], doublest_ave[])
{
   for (int st_num = 1; st_num <=NUMBER_STUDENTS; st_num++)
   {//Process one st_num:
       double sum = 0;
       for (int quiz_num =1; quiz_num <= NUMBER_QUIZZES; quiz_num++)
           sum = sum + grade[st_num -1][quiz_num -1];
       //sum contains thesum of the quiz scores for studentnumber      Â
       //st_num.
       st_ave[st_num -1] =sum/NUMBER_QUIZZES;
       //Average for studentst_num is the value of st_ave[st_num-1]
   }
}
void compute_quiz_ave(const int grade[][NUMBER_QUIZZES], doublequiz_ave[])
{
   for (int quiz_num = 1; quiz_num <=NUMBER_QUIZZES; quiz_num++)
  {//Process one quiz (for all students):
       double sum = 0;
       for (int st_num = 1;st_num <= NUMBER_STUDENTS; st_num++)
           sum = sum + grade[st_num -1][quiz_num -1];
       //sum contains thesum of all student scores on quiz number
       //quiz_num.
       quiz_ave[quiz_num -1]= sum/NUMBER_STUDENTS;
       //Average for quizquiz_num is the value of quiz_ave[quiz_num-1]
   }
}
//Uses iostream and iomanip:
void display(const int grade[][NUMBER_QUIZZES],
                       const double st_ave[], const double quiz_ave[])
{
   using namespace std;
   cout.setf(ios::fixed);
   cout.setf(ios::showpoint);
   cout.precision(1);
   cout << setw(10) << \"Student\"
        <        <   for (int st_num = 1; st_num <=NUMBER_STUDENTS; st_num++)
   {//Display for one st_num:
       cout <            << setw(5) << st_ave[st_num-1] << \" \";
       for (int quiz_num =1; quiz_num <= NUMBER_QUIZZES; quiz_num++)
           cout <       cout <   }
   cout << \"Quiz averages = \";
   for (int quiz_num = 1; quiz_num <=NUMBER_QUIZZES; quiz_num++)
       cout << setw(5)<< quiz_ave[quiz_num -1];
   cout << endl;
}