c++ - 试图从类中调用函数

Question

我正在尝试通过创建一个对象来执行 .h 文件中的代码。我做错了什么？

    //TicketFineCalculator.h
#include <iostream>
using namespace std;

class TicketFineCalculator
{

    public:
int getFine() {
        int procFee, zone, speedLimit, actualSpeed, totalFine;
     int anotherRun = 1;
     while (anotherRun == 1){
cout << "\n-------------------------------";
cout << "\nSpeeding Ticket Fine Calculator";
cout << "\n-------------------------------";
cout << "\nEnter processing fee, in dollars:";
cin >> procFee;
cout << "\nSpeeding Ticket #1";
cout << "\nEnter the type of speeding offense (1 for regular, 2 for work zone, 3 for residential district):";
cin >> zone;

cout << "\nEnter the speed limit, in miles per hour:";
cin >>  speedLimit;
cout << "\nEnter the vehicle's speed, in miles per hour:";
cin >> actualSpeed;
cout << "\nThe total fine is:" << totalFine;
cout << "\nEnter 1 to enter process another speeding ticket or 0 to quit:";
cin >> anotherRun;
     } // terminates while loop
return totalFine; 
        }
 // Calculate the total fine given the road zone, speed limit, and the vehicle's actual speed.
 // Return the fine as an integer.

};


//Project1.cpp
#include <iostream>
#include "TicketFineCalculator.h"

int totalFine;
TicketFineCalculator::getFine(totalFine);

    int main(){
    cout << totalFine;
return 0;
} //terminates main

Answer 1

如果您想在 TicketFineCalculator 中调用 getFine() 方法，您必须将方法声明为静态的，如下所示:

class TicketFineCalculator
{
public:
    static getFine()
    {
    }
};

或者您必须创建 TicketFineCalculator 的实例并使用该实例调用该方法。