Write a program that zeros the elements of the main diagonal of a given square matrix A.

#include <stdio.h>
#define SIZE 50
void main()
{
	int M[SIZE][SIZE]; /* Square matrix   */
	int N;         	/* dimension of the matrix */
	int i, j;      

	do {
		printf("Enter the dimension: ");
		scanf("%d", &N);
	} while (N <= 0 || N > SIZE);

	for (i = 0; i < N; i++)
	{
		for (j = 0; j < N; j++)
		{
			printf("Enter M[%d][%d]=", i, j);
			scanf("%d", &M[i][j]);
		}
	}

	printf("\n\n*** Matrix ***\n");
	for (i = 0; i < N; i++)
	{
		for (j = 0; j < N; j++)
			printf("%4d", M[i][j]);
		printf("\n");
	}

	
 	for (i=0; i<N; i++)
      		M[i][i]=0;
 
	printf("\n\n*** Matrix ***\n");
	for (i = 0; i < N; i++)
	{
		for (j = 0; j < N; j++)
			printf("%4d", M[i][j]);
		printf("\n");
	}
}