FINDING OF TRACE OF A MATRIX

#include<stdio.h>

main()

{

int a[10][10],i,j,sum=0;

printf("enter the values of m,n");

scanf("%d%d",&m,&n);

printf("enter the elements of matrix a");

for(i=0;i<m;i++)

for(j=0;j<n;j++)

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

for(i=0;i<m;i++)

for(j=0;j<n;j++)

if(i==j)

sum=sum+a[i][j];

printf("trace of a matrix=%d",sum);

}