Koding Deret Fibonacci

#include <conio.h>
#include <stdio.h>

int main (){

int batas, fib, prefib, posfib;

printf ("Masukkan Batas Bilangan Fibonacci\t\t:\t");
scanf ("%d",&batas);

prefib = 0;
posfib=1;

if (batas == 0) printf ("%d", prefib);
else
if (batas == 1) printf ("0  %d  %d", posfib, posfib);
else {
printf ("%d  %d  ", prefib, posfib);
for (int a = 0; a<= batas; a++)
{fib = prefib+posfib;
if (fib >0 && fib<=batas){
printf ("%d  ", fib);}
prefib= posfib;
posfib = fib;
}
}

getch();
return 0;
}