#include <iostream.h>
#include "time.h" // my file

void CTime::Next ( void )    // next time
  {
	if ( ++second > 59 )
	  {
		NextMinute();
	  }
  }

void CTime::NextMinute( void )
  { 
	second =0; if ( ++minute > 59 ) { NextHour(); }
  }

void CTime::NextHour( void )
  { 
	second =0; 
	minute=0;
	if ( ++hour > 24 ) { minute = 0; hour=1; }
  }

void CTime::Print( void )
  {
   cout <<  hour  << ':' <<  minute << ':' <<  second;
  }

void CTime::Prev( void )
  {
	if ( --second <0 ) PrevMinute();
  }

void CTime::PrevMinute( void )
  {
	if ( --minute < 0 ) { minute = 59; hour--; }

  }

void CTime::PrevHour( void )
  {
	if ( --hour < 0 ) { minute = 0; hour=23; }

  }

void CTime::ReadTime ( void )	
{ 
	int s;
	int m; 
	int h;
	cout << "Give a Time: s, m, h " << endl;
    cin>> s>> m >> h;
	second = s; minute = m; hour = h;  }