#include<iomanip>
#include<cmath>
using namespace std;
int a;//声明全局变量
int main()
{
	cin>>a;
	if(a>=90&&a<=100)//判断分数等级
	cout<<"Great";//输出分数等级
	else if(a>=70&&a<=89)
	cout<<"Good";
	else if(a>=60&&a<89)
	cout<<"Average";
	else 
	cout<<"Poor";
	return 0;
}

#include <iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    if(n>=90)
        cout<<"Great"<<endl;
    else if(n>=70)
        cout<<"Good"<<endl;
    else if(n>=60)
        cout<<"Average"<<endl;
    else    
        cout<<"Poor"<<endl;
    return 0;
}

#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    if(90<=n&&n<=100)
    {
        cout << "Great";
    }
    else if(70<=n&&n<=89)
    {
        cout << "Good";
    }
    else if(60<=n&&n<=69)
    {
        cout << "Average";
    }
    else
        cout << "Poor";
    return 0;
}

有标志认证，属三无产品，请各位放心食用

#include <iostream>
using namespace std;
int main()
{
 int n;
 cin>>n;
 if(n>=90&&n<=100)
 {
    cout<<"Great"<<endl;
 }
 else if(n>=70&&n<=89)
 {
    cout<<"Good"<<endl;
 }
 else if(n>=60&&n<=69)
 {
    cout<<"Average"<<endl;
 }
 else if(n>=0&&n<=59)
 {
   cout<<"Poor"<<endl;
 }
   return 0;
}

#include<iostream> #include<cmath> #include<iomanip> using namespace std; const int N=1e3+10; const int INF=0x3f3f3f3f; int a; int main(){ cin>>a; if(a<=100&&a>=90) cout<<"Great"; else if(a<=89&&a>=70) cout<<"Good"; else if(a<=69&&a>=60) cout<<"Average"; else cout<<"Poor"; }

1. f=eval(input())
2. if f>=90 and f<=100:
3. print('Great')
4. if f>=70 and f<=89:
5. print('Good')
6. if f>=60 and f<=69:
7. print('Average')
8. if f<=59 and f>=0:
9. print('Poor')