# Solved Homework: Question: Exercise#2: Marks Average and Grade of Average Write a program that reads 25 random grades in the…

Exercise#2: Marks Average and Grade of Average Write a program that reads 25 random grades in the range 0 and 100 inclusive. The program stores the grades in the array Al 5][5] then finds the average of each column and stores the answer in B[]. Print the elements of all arrays Al and B. Sample input/output The marks are: 20 40 60 80 100 20 40 60 80 100 20 40 60 80 100 20 40 60 80 100 20 40 60 80 100 The average for the marks are: 20 40 60 80 100

here i have written the complete C++ program as per the requirement.

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Program:

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#include<iostream>

#include<cstdlib>

#include<ctime>

//namespace std

using namespace std;

//start of the main function

int main()

{

srand(time(0));

//an two dimensional array

int A[5][5], count = 0;

double sum = 0;

double B[5];

cout<<endl;

//display the marks

cout<<“The marks are: “<<endl<<endl;

//loop for 5 times

for(int i =0; i<5; i++)

{

//loop for 5 times

for(int j = 0; j<5; j++)

{

//generate random grades between 0 and 100

A[i][j] = rand()%101;

//display the number

cout<<A[i][j]<<” “;

}

cout<<endl<<endl;

}

//calculate the sum of grade of each column

for(int j = 0; j<5; j++)

{

while(count<5)
{

sum = sum + A[count][j];

count++;

}

count = 0;

//store the average on array B

B[j] = sum/5;

}

//display the average marks of each column

cout<<“The average for the marks are: “<<endl<<endl;

for(int i = 0; i< 5; i++)

{

cout<<B[i]<<endl<<endl;

}

return 0;

}

//end of the main function

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Sample Output:

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Pages (550 words)
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