C++ programs for fibnocci series

#include<iostream.h>
#include<conio.h>
class s
{
int a,b,c,i,n;
public:
void fib();
};

void s::fib()
{
c=0,a=0,b=1;
cout<<"Enter the limit";
cin>>n;
cout<<a;
for(i=0;i<n;i++)
{
a=b;
b=c;
c=a+b;
cout<<""<<c;
}}
void main()
{
s s1;
s1.fib();
getch();
}