c++ - 运算符重载错误不匹配运算符<<

Question

我正在学习 C++ 中的运算符重载我创建了一个程序来重载后缀和前缀的增量运算符

它显示错误 no match for operator<<

#include <iostream>

using namespace std;
class counter
{
    unsigned int countx;
public:
    counter(): countx(0)
    {}
    counter (int c) : countx(c)
    {}
    unsigned int get_count() const
    {
        return countx;
    }
    counter operator ++ ()
    {
        return counter(++countx);
    }
    counter operator ++ (int)
    {
        return counter(countx++);
    }
};

int main()
{
    counter c1, c2;
    cout<<endl<<"c1 : "<<c1.get_count;
    cout<<endl<<"c2 : "<<c2.get_count;

    ++c1;
    c2 = ++c1;
    cout<<endl<<"c1 : "<<c1.get_count;
    cout<<endl<<"c2 : "<<c1.get_count;

    c2= c1++;
    cout<<endl<<"c1 : "<<c1.get_count;
    cout<<endl<<"c2 : "<<c2.get_count;

    return 0;
}

能否请您提出一些建议来解决这个问题，并解释为什么会出现此错误？

Answer 1

我的编译器 (llvm) 说:

error: reference to non-static member function must be called; did you mean to call it with no arguments?
    cout<<endl<<"c1 : "<<c1.get_count;
                         ~~~^~~~~~~~~
                                     ()

建议您调用电话:

cout<<endl<<"c1 : "<<c1.get_count();