我的程序源代码,可以直接到C++中运行。#include <iostream.h>void main() int score; loop: cout<<"请输入分数:\\n"; cin>>score; switch(score/10) case 10: case 9:cout<<"A\\n";break; case 8:cout<<"B\\n";break; case 7:cout<<"C\\n";break; case 6:cout<<"D\\n";break; default:cout<<"E\\n"; } goto loop;}