未声明的标识符?我以为我定义了它 [英] Undeclared identifier? I thought I defined it

问题描述

所以，我在我的约会类的成员函数中遇到了一个未声明的标识符错误，发生了.我以为我在构造函数中初始化了这些变量，并在初始化列表中初始化了日期对象.但是这两个变量都不起作用.我只是有点困惑为什么编译器认为它是未声明的类型而不是变量.

So, I'm getting an undeclared identifier error in my member functions for my appointment class, occurs_on . I thought I initialized those variables in the constructor and the date object in the initializer list. But neither of the variables work. I'm just a bit confused why the compiler thinks it's an undeclared type and not a variable.

谢谢.

#include<iostream>
#include <string>


using namespace std;

class Date{

public:
    Date(int month, int day, int year);

    int getMonth() const;
    int getDay() const;
    int getYear() const;

private:
    int month;
    int day;
    int year;
};

Date::Date(int month, int day, int year) {
    this->month = month;
    this->day = day;
    this->year = year;
}

int Date::getMonth() const{
    return month;
}

int Date::getDay() const{
    return day;
}

int Date::getYear() const{
    return year;
}


class Appointment
{

    public:
    Appointment(string description, int month, int day, int year, int hour, int minute);
    virtual bool occurs_on(int month, int day, int year);

    private:
    int hour, minute;
    string convertInt(int number) const;
    virtual string print();

    protected:
    Date getDate();
    Date date;


};

Appointment::Appointment(string description, int month, int day, int year, int hour, int minute):date(month, day, year){
    // the above line, i'm trying to initalize the date object with the three parameters month day and year from the appointment constructor.
    this-> hour = hour;
    this-> minute =minute;

}

bool occurs_on(int month, int day, int year){
    if (date.getMonth()== month && date.getYear()= year && date.getDay()==day) //first error. variables like hour and minute from the constructor and date from the initalizer list are giving me unknown type name errors. I thought I initalized those variables in the constructor and in the initalizer list.

        day= minute; //

        return true;

}

推荐答案

您在 occurs_on 前面错过了 Appointment::.

You have missed Appointment:: in front of occurs_on.

//---vvvvvvvvvvvvv
bool Appointment::occurs_on(int month, int day, int year){
    // ..
}

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