你好哇，新的一天开始啦！

solution

取数值的不同部分，联想到借助string

#include<iostream>
#include<string>
using namespace std;
bool judge(string s){
	int n = atoi(s.c_str());
	if(n == 1 || n == 0) return false;
	for(int i = 2; i * i <= n; i++){
		if(n % i == 0) return false;
	}
	return true;
}
int main(){
	string s;
	int flag = 1;
	cin >> s;
	while(s.size()){
		if(judge(s)) cout << s << " Yes" << endl;
		else{
			 cout << s << " No" << endl;
			 flag = 0;
		} 
		s.erase(s.begin());
	}
	if(flag) cout << "All Prime!";
	return 0;
}