Thread: Homework Help - Create C++ Date class

This is not valid C++ syntax:

Code:

d2.getMonthName(int)

instead of "int," you need to give it an actual value, like d2.getMonth() or similar.

Originally Posted by boygenuis

I've got that getMonth function which is slick and returns the integer value month, but adding month in my d2.getMonthName line returns "Blank" from when I declare, initialize name in Date_Hardesty.cpp.

1. Show the code. Your description can't convey the complexity of a line of code;

2. My guess is that the value of month is outside the range recognized by getMonthName(), and therefore, none of the if() statements catch it. You should change it to a series of "if" and "else if" statements, and add a final "else" to catch values that aren't recognized.

Hmm, ok, so I've got my getMonthName function

Code:

//function to return the MonthName to main
std::string Date::getMonthName (int m)
{
   std::string name = "Blank";

   if (m == 1)
      name = "January";
   else if (m == 2)
      name = "February";
   else if (m == 3)
      name = "March";
   else if (m == 4)
      name = "April";
   else if (m == 5)
      name = "May";
   else if (m == 6)
      name = "June";
   else if (m == 7)
      name = "July";
   else if (m == 8)
      name = "August";
   else if (m == 9)
      name = "September";
   else if (m == 10)
      name = "October";
   else if (m == 11)
      name = "November";
   else if (m == 12)
      name = "December";

   return name;  //send the Month's name back to main
} //end getMonthName

And, I've got my main function

Code:

// DateDemo.cpp

#include <iostream>
#include <iomanip>
#include <string>
using std::cout;
using std::endl;
using std::setfill;
using std::setw;
using std::string;

#include "Date_Hardesty.h"

// note - you may need to change the definition of the main function to
// be consistent with what your C++ compiler expects.

//int _tmain(int argc, _TCHAR* argv[])
int main()
{
    int month;
    
    Date d1;             // default ctor
    Date d2(7, 4, 1976); // July 4'th 1976
    Date d3(0, 15, 1880);// Adjusted by ctor to January 15'th 1900

    d1.print();         // prints 01/01/2000
    d1.printLong();     // prints 1 January 2000
    cout << endl;

    d2.print();         // prints 07/04/1976
    d2.printLong();     // prints 4 July 1976
    cout << endl;

    d3.print();         // prints 01/15/1900
    d3.printLong();     // prints 15 January 1900
    cout << endl;

    cout << "object d2's day is " << d2.getDay() << endl;
    cout << "object d2's month is "  << d2.getMonth() << 
    " which is " << d2.getMonthName(month) << endl;
    cout << "object d2's year is " << d2.getYear() << endl;

    return 0;
}

But, I seem to be missing how to print the correct long version of my d2 Date. Do you need to see more code?

Here's my output:
01/01/2000
01 January 2000

07/04/1976
04 July 1976

00/15/1880
15 Blank 1880

object d2's day is 4
object d2's month is 7 which is Blank
object d2's year is 1976

You aren't initializing month to anything. It's just whatever happens to be at that location on the stack when it gets created. In line 40, instead of passing month to getMonthName(), pass d2.getMonth(). That should solve your problem. Alternately, assign a value to month, such as d2.getMonth().

Hmmm. Considering you appear to be using Visual Studio, running the code should result in an error saying that month is uninitialized when used. There is a debugger in the IDE, you know... try it sometimes.