Fibonacci Series upto given number using for loop in C++

#include<iostream.h>
#include<conio.h>
void main()
{
  clrscr();
  int a,b,c,n;
  cout<<"\nEnter Number :: ";
  cin>>n;
  a=0;
  b=1;
  cout<<"\nFibonacci Series upto "<<n<<" :: ";
  cout<<a<<"\t"<<b;
  for(c=a+b;c<=n;c=a+b)
  {
      cout<<"\t"<<c;
      a=b;
      b=c;
  }
  getch();
}

OUTPUT::

Enter Number :: 5

Fibonacci Series upto 5 :: 0 1 1 2 3 5