C :

#include <stdio.h>

int main(void) {
	int n;
	scanf("%d", &n);
	if(n >= 0)
		printf("+\n");
	else
		printf("-\n");
	return 0;
}

C++ :

#include<cstdio>
using namespace std;
int main()
{
	int n;
	scanf("%d",&n);
	if(n>0)
	{
		printf("+\n");
	}
	else
	{
		printf("-\n");
	}
	return 0;
}

Pascal :

program hfj;
  var
    a:integer;
  begin
    read(a);
    if (a>0) then write('+');
    if (a<0) then write('-');
  end.