#include<iostream>
using namespace std;

class Date {
    int Day;
    int Month;
    int Year;

public:
    void setDay(int day) {
        if(day>=1 && day<=31)
        Day = day;
    }
    int getDay() {
        return Day;
    }
    void setMonth(int month) {
        if(month <= 12)
        Month = month;
    }
    int getMonth() {
        return Month;
    }
    void setYear(int year) {
        if(year >=1111)
        Year = year;
    }
    int getYear() {
        return Year;
    }

    void DisplayDate()
    {
        cout << "Days:  " << Day << " \n";
        cout << "Month: " << Month << " \n";
        cout << "Year: " << Year << " \n";
    }
    Date(int day, int month, int year) {
        Day = day;
        Month = month;
        Year = year;
    }
    void Birthday()
        {
            cout << "Your Birthday is " << Day << " / " << Month << " / " << Year << "\n";
        }
    

};

int main()
{
    
    Date date1 = Date(10, 10, 2000);
    date1.DisplayDate();
    date1.Birthday();

}

This code is enter date year and month . how do i add the cin function to ask the user to enter his data.
i have tried adding Cin in my main function but it provides me with lots of errors .............................................................................. ................................................................................ .......................................................................... ................................................................................

CodePudding user response：

Don't know what problem it is you are having, could you list the errors you are getting? You should be able to just write 'int day; cin >> day;'.

CodePudding user response：

Im assuming you did something like cin >> date1.Day >> date2.Month >> date3.Year , which obviously won't work since your variables are private. Make them public or enter them in other variables and set their values by using a method.

CodePudding user response：

You can simply write a constructor which gets the data you need from any std::istream object like std::cin.

Simply add the constructor to your class:

class Date {
    int Day;
    int Month;
    int Year;

public:

    Date( std::istream& is )
    {
        std::cout << "Please enter day" << std::endl;
        is >> Day;
        std::cout << "Please enter Month" << std::endl;
        is >> Month;
        std::cout << "Please enter Year" << std::endl;
        is >> Year;
    }   
... REST OF YOUR CLASS ...
};
int main()
{

    //Date date1 = Date(10, 10, 2000);

    // Construct your object with the constructor and the `std::cin` object
    Date date1{ std::cin };
    date1.DisplayDate();
    date1.Birthday();

}

Now you can also constrcut your class from a file or any other std::istream. If you like o also read from files, it makes no sense to output to std::cout for the requested parms :-)

CodePudding user response：

Cannot understand what is your problem,add the cin function to ask the user to enter his data,like this?

{
    int day, month, year;
    cout << "plearse enter day month year" << endl;
    cin >> day >> month >> year;
    Date date1 = Date(day, month, year);
    date1.DisplayDate();
    date1.Birthday();

}