Conversion Constructor

I was trying to create this class...and I am required to create constructors using conversion constructor. Am I on the right path? I am getting the results, but ai m not sure if this is the reight way to do it? any suggestions...

Thanks

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//classTime.h

//#include "stdafx.h"
#include <iostream>

#ifndef CLASSTIME_H
#define CLASSTIME_H

using namespace std;

class classTime
{
public:
      //Print variables
      void print() const;
      
      //Default constructor: set all the instance variables to zero
      classTime();

      //Conversion constructor: assign the arguments to the instance variables
      //Use construction list operator
      classTime(int, int, int);

      //Conversion constructor: extract the hours minutes and seconds from
      //timeSeconds and assign them to the respective instance variables
      classTime(int timeSeconds);      // timeSeconds_ < seconds24Hours

      //Conversion constructor: parse the hours minutes and seconds from
      //“hh:mm:ss” and assign them to the respective instance variables.
      classTime(const char *time);      // literal string constant "hh:mm:ss"

private:
      int hr;
      int min;
      int sec;      
};

#endif

=======================

//classTime.cpp

//#include "stdafx.h"
#include <iostream>
#include "classTime.h"

using namespace std;
//Print Variables
void classTime::print() const
{
      cout << "Hr = " << hr << endl;
      cout << "Min = " << min << endl;
      cout << "Sec = " << sec << endl;
}

//Default constructor: set all the instance variables to zero
classTime::classTime()
{
      hr   = 0;
      min  = 0;
      sec  = 0;
}

//Conversion constructor: assign the arguments to the instance variables
//Use construction list operator
classTime::classTime(int hour, int minute, int second)
{
      hr  = hour;
      min = minute;
      sec = second;
}

//Conversion constructor: extract the hours minutes and seconds from
//timeSeconds and assign them to the respective instance variables
classTime::classTime(int timeSeconds)
{
      hr  = ((timeSeconds / 60) / 60);
      min = (timeSeconds / 60) - ((timeSeconds/60)/60) * 60;
      sec = timeSeconds - ((hr * 60 * 60) + (min * 60));
}

classTime::classTime(char *time)
{

}

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TestDriver.cpp

// INCLUDES
//#include "stdafx.h"
#include <conio.h>
#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
#include <cstdlib>      
//#include "windows.h"

#include "classTime.h"

using namespace std;

// MACROS
#define skip1   cout << endl
#define skip2   cout << endl << endl
#define skip3   cout << endl << endl << endl

int main()
{
      cout << "\nBegin main()\n\n";
      
      //Testing the default constructor
      classTime one;
      one.print();
      skip2;

      //Testing the Conversion constructor
      classTime two(2,6,8);
      two.print();
      skip2;

      classTime three(559);
      three.print();
      skip2;

      cout << endl
         << "\nEnd - Normal Termination\n"
         << endl;
      return 0;
} // main

=======================