Time advance program in C++

#include<iostream.h>
#include<conio.h>
class timex {
public:
int hours;
int min;
int seconds;
timex(int h,int m,int s)
{
hours=h;
min=m;
seconds=s;
}
void access(){
 cout<<"hours : "<<hours;
 cout<<"  minutes : "<<min;
 cout<<"  seconds : "<<seconds;
}
void advance(int w,int r,int m){   int a,b,c,e;
cout<<endl<<"enter your hour advance:"; cin>>a;
cout<<endl<<"enter your minutes advance:";  cin>>b;
cout<<endl<<"enter your seconds advance:"; cin>>c;
hours=hours+a;   min=min+b;  seconds=seconds+c;
if(hours>12)
{
            hours=hours%12;

}
if(min>=60)
{   e=min/60;  min=min%60;  hours=hours+e;

}
if(seconds>=60)
{  e=seconds/60;
               min=min+e;
seconds=seconds%60;} }
};
int main()
{        
timex s(12,34,23);                        
 int z,x,v;
s.access();
s.advance(z,x,v);
s.access();
getch();
}