CJ/Project1/test.cpp

#include<iostream>
using namespace std;

bool isPrime(int n)
{ 
	if (n < 2) return false;
	for (int i = 2; i < n; i++)
	{
		if (n % i == 0) return false;
	}
	return true;
}

int main()
{
	int n;
	cin >> n;
	for (int i = 2; i <= n; i++)
	{
		if (isPrime(i)) cout << i << " ";
	}

	return 0;
}