Find the Greatest Time in C or CPP from two different times.

Find the Greatest Time in C or CPP from two different times.
Example Code:
#include<iostream.h>
#include<conio.h>
class time
{
private:
int hh,mm,ss;
public:
void get()
{
cout<<"\n enter hh,mm,ss:";
cin>>hh>>mm>>ss;
}
void show()
{
cout<<"\n hour:"<<hh<<"\n minute:"<<mm<<"\n second:"<<ss;
}
time greatest(time x)
{
if (hh>x.ss)
return *this;
else
if(hh>x.hh)
return x;
else
if(mm>x.mm)
return *this;
else
if(mm<x.mm)
return x;
else
if(ss>x.ss)
return *this;
else
return x;
}
};
void main()
{
clrscr();
time t1,t2,t3;
cout<<"\n enter time1:";
t1.get();
cout<<"\n enter time2:";
t2.get();
t3=t1.greatest(t2);
cout<<"\n greatest time:";
t3.show();
getch();
}