Mine

#include <iostream>
#include <iomanip>
#include <stdio.h>
using namespace std;

#define M 4 
#define N 4 

int main()
{
	int A[M][N];
	int i, j;
	for (i = 0; i < M; ++i) 
	{ 
		for (j = 0; j < N; ++j) 
		{ 
			if(i == j) 
				A[i][j]=0; 
			else 
				if(i<j)
					A[i][j]=1;
				else
					A[i][j]=-1; 
		}
	}
	
	for(i=0;i<M; ++i)
	{
		for(j=0;j<N;++j)
			cout<<setw(3)<<A[i][j];
		cout<<endl;
	}
	return 0;
}