Nedd help in date class

[madking153]

Iam a amature in programming ,I know the basic of C++ , so i need help in my homeworkls show me how to do it and explain.
iwill really appreciate.Below is the homework


//File date.h: class definition

class date {

int day;
int month;
int year;

public:
Date(); //sets to valid default date

void setDate(int d,int m,int y);

//sets to given date and corrects if necessary

void outputCout(); //outputs day/month /year to cout


// ...

private :

//....

};

//*************************************************

// File date.cpp : definitions of the member funtions of class date


#include"date.h"
//..... //member function definition

//*************************************************

// File main.cpp : test program for class Date

#include"date.h"

int main()
{
Date test;

test.setDate(31,12,2001);
test.outputCout();

//.......

return 0;

}



--------------------------------------------------------------------
The member functions are defined completely in the file date.cpp so that the main program run properly- also for other date values .Only the parts important for comprehension are shown; missing parts are indicated with comments .
Write the following member functions:

void monthBegin(); //alters date to the beginning of this month
void nextmonthBegin(); //alters date to the first of the next month


The following parts are required for both functions:
.declaration of the member functions in the class definition
.definition of the member function in the file date.cpp
.extension of the main program to test these 2 new member functions ,to be precise,each with 2 different date values that are present in the program