#include <iostream>
using namespace std;
void main()
{
	int x, y;
	int z=0;
	do{
		cout << "Please Enter a positive number\n";
		cin >> x;
		if(0 == x || 1 == x) {
			cout<<"Please try again with number other then 0 or 1" <<endl;
		}
	}
	while((0 == x) || (1 == x));
 
	for (y = 2; y<x; y++)
	{
		if ((x % y) == 0)
		{
			z=1;
			break;
		}
	}
 
	if (z==1)
		cout << "Not prime number\n";
	else
		cout << "prime number\n";
 
}

#include <iostream>
using namespace std;
int main()
{
    int x, y;
    while (true) {
        cout << "Please Enter a positive number\n";
        cin >> x;
        if(0 != x || 1 != x) break;
        cout<<"Please try again with number other then 0 or 1\n";
    }
 
    for (y = 2; y<x; y++) {
        if ((x % y) == 0)
            break;
    }
 
    if (y < x)
        cout << "Not prime number\n";
    else
        cout << "prime number\n";
}

if(0 != x || 1 != x) break;

if(x>1) break;