Swap and find larger number using function overloading c + +

#include<iostream.h>
#include<conio.h>
class number
{
private:
int a,b,temp;
public:
void number1();
void number1(int);
};
void number::number1()
{
cout<<"\n Enter the value of a";
cin>>a;
cout<<"\n Enter the valueo of b";
cin>>b;
if(a>b)
{
cout<<"\n laarrger value:" <<a;
}
else
{
cout<<"\n larger value:"<<b;
}
}
void number::number1(int c)
{
temp=a;
a=b;
b=temp;
cout<<"\ndata after swap";
cout<<"\n a:"<<a;
cout<<"\n b:"<<b;
}
int main()
{
number n;
clrscr();
n.number1();
n.number1(3);
getch();
return 0;
}