- #include<iostream>
- #include<cstdlib>
- using namespace std;
- int main()
- {
- int s;
- asdg:
- cout<<"輸入成績";
- cin>>s;
- switch(s)
- {
- case 90 ... 100:
- cout<<"優等"<<endl;
- break;
- case 80 ... 89:
- cout<<"甲等"<<endl;
- break;
- case 70 ... 79:
- cout<<"乙等"<<endl;
- break;
- case 60 ... 69:
- cout<<"丙等"<<endl;
- break;
- case 0 ... 59:
- cout<<"不及格"<<endl;
- break;
- default:
- cout<<"重輸"<<endl;
- goto asdg;
- }
- goto asdg;
- system("pause");
- return 0;
- }
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