#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,r,c,a[10][10],z=0;
clrscr();
printf("Enter the r and c");
scanf("%d%d",&r,&c);
for(i=1;i<=r;i++)
{
for(j=1;j<=c;j++)
{
printf("a[%d][%d]=",i,j);
scanf("%d",&a[i][j]);
}
}
for(i=1;i<=r;i++)
{
for(j=1;j<=c;j++)
{
printf("%d",a[i][j]);
}
printf("\n");
}
for(i=1;i<=r;i++)
{
for(j=1;j<=c;j++)
{
if(i==j)
{
z=z+a[i][j];
}
}
}
printf("sum of digonal elements=%d",z);
getch();
}
C Program to find Sum of Diagonal elements in Matrix
