Slip 19 - B) Write a menu driven program to perform the following operation on m*n Matrix 1. Find sum of diagonal elements of matrix 2. Find sum of all even numbers of matrix

Solution:

#include <stdio.h>

void main()

{

    int a[10][10], transpose[10][10], r, c, i, j,sum=0, fig_code;

    printf("Enter rows and columns of matrix: ");

    scanf("%d %d", &r, &c);

    // Storing elements of the matrix

    printf("\nEnter elements of matrix:\n");

    for(i=0; i<r; ++i)

        for(j=0; j<c; ++j)

        {

            printf("Enter element a%d%d: ",i+1, j+1);

            scanf("%d", &a[i][j]);

        }

    printf("-------------------------\n");

    printf(" 1 --> sum of diagonal elements\n");

    printf(" 2 --> Sum of even elements\n");

    printf("-------------------------\n");

    printf("Enter the Figure code\n");

    scanf("%d", &fig_code);

    switch(fig_code)

    {

 

    case 1:

 for(i=0;i<r;i++)

    {

        for(j=0;j<c;j++)

        {

            if(i==j)

            {

                sum=sum+a[i][j];

            }

        }

    }    printf("\n sum of digonal elements= %d",sum);

        break;

    case 2:

     

        for(i=0; i<r; ++i)

        for(j=0; j<c; ++j)

        {

            if(a[i][j]%2==0)

                  sum=sum+a[i][j];

        }

        printf("\n sum of even elements= %d",sum);

        break;

 

    default:

        printf("Error in figure code\n");

        break;

    }

}