这到底哪里错了？来个人帮帮我

Question

#include
using namespace std;
int prime(int num)
{
for (int i = 2; i < num; i++)
if (num /i == 0)
return 0;
return 1;
}
int main()
{
int n;
cout << "输入一个整数n:";
cin >> n;
for (int i = 2; i <= n / 2; i++)
{
if (n / i == 0)
cout << i << '\t';
}
cout << endl;
return 0;
}

Answer 1

if (num /i == 0)
改成
if (num %i == 0)