[话题] 静态成员变量

yyyyye

class A
{
    const int n = 3;
    static int t;
 
public:
    A(int a = n)
    {
        cout << a <<endl;
    }

    void invoke(int a = t)
    {
        cout << a << endl;
    }
};
 
int A::t = 4;
 
int main()
{
    A a;
    a.invoke();
    return 0;
}

上述代码的结果是什么？

zlybq

yyyyye

zlybq why

zlybq

yyyyye t=4，a=t（汗）

zlybq

yyyyye 挨，好像不太对

Koarz

The memberconst int n of class A, it construct after than a = n, so A a; execute A(int a = n) the compiler dont know what is n