Write a C-prog. for Addition of two 4x4 Matrix

#include <stdio.h>
#include <conio.h>
void main()
{
 int a[4][4],b[4][4],i,j;
 clrscr();
 printf("1st Matrix");
 for(i=0;i<=3;i++)
  {
   for(j=0;j<=3;j++)
    scanf("%d",&a[i][j]);
   printf("\n");
  }
printf("2nd  Matrix");
for(i=0;i<=3;i++)
 {
  for(j=0;j<=3;j++)
   scanf("%d",&b[i][j]);
  printf("\n");
 }
printf("Print 1st Matrix = \n");
for(i=0;i<=3;i++)
 {
  for(j=0;j<=3;j++)
     printf("%d ",a[i][j]);
     printf("\n");
 }
printf("Print 2nd Matrix = \n");
for(i=0;i<=3;i++)
 {
  for(j=0;j<=3;j++)
    printf("%d ",b[i][j]);
    printf("\n");

 }
printf("\n addition of 1st and 2nd matrix = \n");
 for(i=0;i<=3;i++)
 {
  for(j=0;j<=3;j++)
   printf("%d ",a[i][j]+b[i][j]);
   printf("\n");
 }
getch();
}