#include<stdio.h>
int main()
{
    enum C {a,b,c,d};
    enum C q;
    for(q=a;q<=d;q++)
    {
        switch(q)
        {
            case a:printf("A\n");break;
            case b:printf("B\n");break;
            case c:printf("C\n");break;
            case d:printf("D\n");break;
            default:break;
        }
    }
    return 0;
}
编不过，不知道为什么。。。

\Program Files\Microsoft Visual Studio\MyProjects\ghj\main.cpp(6) : error C2676: binary '++' : 'enum main::C' does not define this operator or a conversion to a type acceptable to the predefined operator
执行 cl.exe 时出错.
就这个

\Program Files\Microsoft Visual Studio\MyProjects\ghj\main.cpp(6) : error C2676: binary '++' : 'enum main::C' does not define this operator or a conversion to a type acceptable to the predefined operator
执行 cl.exe 时出错.
就这个

如醍醐灌顶啊！多谢了。。