用赋值表达式作为bool值

enum Status
{
    stOk,
    stQuit,
    stError
};


int main()
{
    Status status;
    int n;
    bool b1 = (status = stOk);        //false
    bool b2 = (n = 0);                //false
    bool b3 = (n = 1);                //true
}

总结：结果并非一直为true，得看后面赋的值是否为0