Question

Write a program to calculate the row averages of a 4x4 matrix. In main program get the elements of a 4x4 matrix and display the matrix, then call the function “average” to calculate the row averages. Function “average” will find the average of rows of a 4x4 matrix and store the results into a 1-dimensional array and return it as parameter. Main program should display the row averages which are greater than 5.0 returned by the function “average”. 

Use c language 

 

Enter 4x4 matrix elements: 5 3 8 4 7 9 6 9 2 7 6 5 7 1 3 5

 

5.0  3.0  8.0  4.0

7.0  9.0  6.0  9.0

2.0  7.0  6.0  5.0

7.0  1.0  3.0  5.0

 

Row averages greater than 5.0:

Average of row 1 = 7.8

Answer 1

#include <stdio.h>

void main ()

{

    

    static float array[10][10] , sum = 0;

    int i, j, m, n;

    

    printf("Enter the order of the matrix\n");

    scanf("%d %d", &m, &n);

    

    printf("Enter the co-efficients of the matrix\n");

    for (i = 0; i < m; ++i)

        {

            for (j = 0; j < n; ++j) 

                {

                    scanf("%f", &array[i][j]);

                }

        }

    

    for (i = 0; i < m; ++i) 

        {

            for (j = 0; j < n; ++j) 

                {

                    sum = sum + array[i][j] ;

                }

            if( sum > 5.0)

                printf("Sum of the %d row is = %f\n", i, sum);

            sum = 0;

            

        }

}