Add Two Matrices in C-Program

//Add Two Matrices
#include <stdio.h>
int main()
{
int r, c, a[100][100], b[100][100], sum[100][100], i, j;
printf("Enter the number of rows (between 1 and 100): ");
scanf("%d", &r);
printf("Enter the number of columns (between 1 and 100): ");
scanf("%d", &c);
printf("\nEnter elements of 1st 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("Enter elements of 2nd 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", &b[i][j]);
}
// adding two matrices
for (i = 0; i < r; ++i)
for (j = 0; j < c; ++j) {
sum[i][j] = a[i][j] + b[i][j];
}
// printing the result
printf("\nSum of two matrices: \n");
for (i = 0; i < r; ++i)
for (j = 0; j < c; ++j)
{
printf("%d ", sum[i][j]);
if (j == c – 1) {
printf("\n\n");
}
}
return 0;
}

/*MATRIX ADDITION*/
#include <stdio.h>
main()
{
int a[2][3],b[2][3],c[2][3],i,j;
printf("\nENTER VALUES FOR MATRIX A:\n");
for(i=0;i<2;i++)
for(j=0;j<3;j++)
scanf("%d",&a[i][j]);
printf("\nENTER VALUES FOR MATRIX B:\n");
for(i=0;i<2;i++)
for(j=0;j<3;j++)
scanf("%d",&b[i][j]);
for(i=0;i<2;i++)
for(j=0;j<3;j++)
c[i][j]=a[i][j]+b[i][j];
printf("\nTHE VALUES OF MATRIX C ARE:\n");
for(i=0;i<2;i++)
{
for(j=0;j<3;j++)
printf("%5d",c[i][j]);
printf("\n");
}
}