数的判定

2023liuaojie LV 7 @ 2023-11-29 17:37:23

using namespace std;
int main()
{
	bool a=true;
	int n;
	cin>>n;
	for(int i=2;i<n;i++)
	{
		if(n%i==0) a=false;
	}
	if(n==1||n==0) cout<<"NO"<<endl<<"NO";
	else
	if(a==true) cout<<"YES"<<endl<<"NO";
	else cout<<"NO"<<endl<<"YES";
}

2302daijinyong @ 2024-4-10 17:46:12

原来1不是合数xswl😕 😕 😕
2024huojuyi @ 2024-7-28 18:28:46

1既不是素数，也不是合数！！！
2024huojuyi @ 2024-7-28 18:29:05

🤢

2
2023zhangzhuoran LV 6 @ 2023-7-28 17:26:08

#include #include using namespace std; int main() { int a,b; cin>>a; if(a!=1){ b=a-1; while(a%b!=0) b--; if(a%b==0&&b>1) { cout<<"NO"<<endl; cout<<"YES"<<endl; } else { cout<<"YES"<<endl; cout<<"NO"<<endl; } } else { cout<<"NO"<<endl; cout<<"NO"<<endl; } return 0; }