C Program to Find Fibonacci Series Using Function

#include<stdio.h>
#include<conio.h>
int fib(int);
void main()
{
int n,i;
clrescr();
printf("\t Fibonacci Series Using Function:\n");
printf("\t **************************\n");
printf("\nInput:\n");
printf("\n------\n");
printf("\nEnter the Number:\n");
scanf("%d",&n);
printf("\n Output:\n");
printf("\n---------\n");
printf("\nFibonacci Series is:");
fib(n);
getch();
}
int fib(int n1)
{
int i,f1=-1,f2=1,f3;
for(i=1;i<=n1;i++)
{
f3=f1+f2;
f1=f2;
f2=f3;
printf("\n \n %d",f3);
}
return(f3);
}