6. Program to read, display and to find the trace of a square matrix.

#include<stdio.h>

void main( )

{

int a[10][10], m,i,j, sum;

printf ("\n Enter order of the square matrix :") ;

scanf ("%d", &m);

printf ("\n Enter the matrix \n");

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

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

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

printf("\nGiven matrix is\n");

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

{

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

printf("%d\t", a[i ][ j ]);

printf("\n");

}

sum = 0;

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

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

printf ("\n trace of the matrix = %d", sum);

}