как работаю 4 функции

#include "stdafx.h"
#include<ctime>
#include<iostream>
 
using namespace std;
class CTime
{ int Sec;
public:
CTime();
CTime(int h, int m, int s);
CTime(CTime &c);
void SetTime(int h, int m, int s);
void SetHours(int h);
void SetMinutes(int m);
void SetSecunds(int s);
int GetHours();
int GetMinutes();
int GetSecunds();
int tm; int th; int ts;
void Print();
CTime operator+(CTime &c);
CTime operator-(CTime &c);
CTime operator++();
CTime operator--();
int operator==(CTime &c);
CTime operator++(int);
CTime operator--(int);
 
 
};
 
CTime::CTime()
{ time_t rawtime;
struct tm *timeinfo;
time (&rawtime);
timeinfo=localtime (&rawtime);
Sec=timeinfo ->tm_hour*3600;
Sec=timeinfo ->tm_min*60;
Sec=timeinfo ->tm_sec;
}
CTime::CTime(int h, int m, int s)
{ if (h>23 || h<0 || m>59 || m<0 || s>59 || s<0)
{ time_t rawtime;
struct tm *timeinfo;
time (&rawtime);
timeinfo=localtime(&rawtime);
Sec=timeinfo->tm_hour*3600;
Sec=timeinfo->tm_min*60;
Sec=timeinfo->tm_sec;
 
 
}
else 
{Sec=h*3600;
Sec+=m*60;
Sec+=s;
}
}
CTime::CTime(CTime &c)
{ Sec=c.Sec;}
 
CTime::GetHours()
{
th=Sec/3600;
return th; }
 
int CTime::GetMinutes()
{ 
tm=(Sec-th*3600)/60;
return tm;}
 
int CTime::GetSecunds()
{
ts=Sec-th*3600-tm*60;
return ts;}
 
void CTime::SetHours(int h)
{ if (h>23 && h<0)
 
Sec+=(h-th)*3600;
}
void CTime::SetMinutes(int m)
{ if (m>59 && m<0)
 
Sec+=(m-tm)*60;
}
void CTime::SetSecunds(int s)
{ if (s>59 && s<0)
 
Sec+=(s-ts);
 
}
 
void CTime::Print()
{ std::cout<<th<<':'<<tm<<':'<<ts<<std::endl;}
 
CTime CTime::operator +(CTime &c)
{ CTime t;
t.Sec=c.Sec+Sec;
return t;
}
 
CTime CTime::operator -(CTime &c)
{ CTime t;
t.Sec=c.Sec-Sec;
return t;
}
 
int CTime::operator ==(CTime &c)
{ return (Sec-c.Sec);}
 
CTime CTime::operator ++()
{ Sec++;
return *this;
}
CTime CTime::operator --()
 
{ Sec--;
return *this;
}
CTime CTime::operator ++(int)
{ CTime t(*this);
Sec++;
return t;
}
 
CTime CTime::operator --(int)
{ CTime t(*this);
Sec--;
return t;
}
 
void CTime::SetTime(int h, int m, int s)
{ SetHours(h); 
SetMinutes(m);
SetSecunds(s);
}
 
int main()
{ CTime t;
int k;
t.Print();
cout<<"Enter amount of hour"<<endl;
cin>>k;
t.SetHours(k);
t.Print();
 
cout<<"Enter amount of minutes "<<endl;
cin>>k;
t.GetMinutes();
t.Print();
 
cout<<"Enter amount of second"<<endl;
cin>>k;
t.GetSecunds();
t.Print();
 
int h, m, s;
cout<<"Enter the time in international format"<<endl;
cin>>h>>m>>s;
CTime t2(h,m,s);
t2.Print();
 
cout<<endl<<"Checking of copy:"<<endl;
CTime t3(t2);
t3.Print();
 
cout<<"Checking of operator++"<<endl;
t2.Print();
(t2++).Print();
(++t2).Print();
 
 
cout<<"Checking of operator--"<<endl;
t2.Print();
(t2--).Print();
(--t2).Print();
 
cout<<"operator+"<<endl;
CTime t4(2,10,15);
t2.Print();
t4.Print();
(t2+t4).Print();
 
 
 
getchar();
getchar();
return 0;
 
}