C program to calculate subtraction of two matrices.

#include<stdio.h>

#include<conio.h>

#define r 2

#define c 2

void main(){

int a[r][c],b[r][c],sub[r][c],i,j;

clrscr();

printf("enter elements of matrix A\n");

for (i=0; i<r; i++){

for (j=0; j<c; j++){

printf("enter A[%d][%d]=",i,j);

scanf("%d",&a[i][j]);

}}

printf("enter elements of matrix B\n");

for (i=0; i<r; i++){

for (j=0; j<c; j++){

printf("enter B[%d][%d]=",i,j);

scanf("%d",&b[i][j]);

}}

for (i=0; i<r; i++){

for (j=0; j<c; j++){

sub[i][j]=a[i][j]-b[i][j];

}}

printf("Subtraction of A and B matrix is:\n"); 

for (i=0; i<r; i++){

for (j=0; j<c; j++){

printf("%d",sub[i][j]);

}

printf("\n");

}

getch(); 

}