find sum of diagonal element of a matrix in c
#include <stdio.h>
void main ()
{
int i,j,matrix[10][10],m,n,sum=0;
printf("Enter number of rows of matrix : ");
scanf("%d", &m);
printf("Enter number of columns of matrix : ");
scanf("%d", &n);
printf("\n");
if(m==n)
{
for (i = 0; i < m; i++)
{
for (j = 0; j < n; j++)
{
printf("Enter element of matrix [%d][%d]: ", i, j);
scanf("%d", &matrix[i][j]);
}
}
printf("\n");
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
{
if(i==j)
{
sum=sum+matrix[i][j];
}
}
}
printf("The sum of diagonal elements of the matrix = %d\n",sum);
}
else
printf("The matrix does not have diagonal elements");
}