Code

#include<stdio.h>   
void main()  
{  
int a,m, n, c, d,x[10][10],y[10][10],z[10][10];  
    printf("Enter the number of rows: ");  
    scanf("%d", & m);  
    printf("Enter the number of columns: ");  
    scanf("%d", & n);  
    printf("\n");
    printf("Enter the elements of first matrix\n");  
    for (c = 0; c < m; c++)  
    for (d = 0; d < n; d++)
     {
        printf("\nx[%d][%d]:",c,d);
        scanf("%d", & x[c][d]); 
     }
    printf("\n");
    printf("Enter the elements of second matrix\n");  
    for (c = 0; c < m; c++)  
    for (d = 0; d < n; d++) 
     {
        printf("\nx[%d][%d]:",c,d);
        scanf("%d", & y[c][d]);  
     }
      
    {  
    printf("\n");
    printf("for addition enter 1\n");
    printf("for subtraction enter 2\n");
    scanf("%d",&a);
    switch(a)
    {
     case 1:
      printf("Sum of entered matrices:-\n\n");
        for (c = 0; c < m; c++)
        {
        for (d = 0; d < n; d++)  
        {  
            z[c][d] = x[c][d] + y[c][d];  
            printf("%d\t", z[c][d]);  
        }  
        printf("\n");  
        }
    
     break;
     case 2:
       printf("subtraction of entered matrices:-\n\n");
        for (c = 0; c < m; c++)
        {
        for (d = 0; d < n; d++)  
        {  
            z[c][d] = x[c][d] - y[c][d];  
            printf("%d\t", z[c][d]);  
        }  
        printf("\n");  
        }
     break;
    }
    }  
    
}