Question

我正在尝试使用显示函数来保存浮点数的信息，当我尝试运行程序时，它会给出错误＆＃34;非标准语法;使用＆＃39;＆amp;＆＃34;创建指针成员＆＃34;然后我添加＆＃39;＆amp;＆＃39;浮点数并使它们成为指针，它给出了错误＆＃34;＆＃39;＆amp;＆＃39 ;:对绑定成员函数表达式的非法操作。我不知道为什么它不会工作。

继承我的代码：

#include <iostream>
#include <string>
#include <conio.h>

using namespace std;


class Rectangle
{

public:

//constructor
Rectangle() { }


//accessor
float GetHeight() { return m_height; } const
float GetWidth() { return m_width; } const

float GetArea() { return m_height * m_width; }

float GetPerimeter() { return m_height + m_height + m_width + m_width; }

//mutator
void SetHeight(float h)
{
    cout << "Please Enter height: \n";
    cin >> h;

};

void SetWidth(float w)
{
    cout << "Please Enter the width: \n";
    cin >> w;
}


void Display()
{
    cout << "Height: " << GetHeight << " " << "Width: " << GetWidth << " " << "Area: " << GetArea << " " << "Perimeter: " << GetPerimeter << endl;

};



private:

float m_height;
float m_width;

};



   using namespace std;

int main()
{
    Rectangle r;
    float height = 0;
    float width = 0;
    r.SetHeight(height);
    r.SetWidth(width);

    r.Display();





    _getch();
    return 0;
}

Answer 1

GetHeight不是变量，而是函数，添加括号：

void Display()
{
    cout << "Height: " << GetHeight() << " " << "Width: " << GetWidth() << " " << "Area: " << GetArea() << " " << "Perimeter: " << GetPerimeter() << endl;

};

Answer 2

除了gabonator所说的，你可能还想设置对象的值：

void SetHeight(float h)
{
    cout << "Please Enter height: \n";
    cin >> h;
    m_height = h;

};

非标准语法;使用＆＃39;＆amp;＆＃39;创建指针成员。显示功能c ++出错

2 个答案: