C++ 代码
#include<bits/stdc++.h>
using namespace std;
int n;
int x;
int main()
{
cin>>n;
for(int i=0;i<n;i++)
{
cin>>x;
int sum=0;
for(int i=1;i<=sqrt(x);i++)
{
if(x%i==0)sum++;
if(sum>1)break;
}
if(sum>1)cout<<x<<" is not prime"<<endl;
else cout<<x<<" is prime"<<endl;
}
return 0;
}