Fibonacci Series

C Program For Fibonacci Series

Program to generate the following series up to nth term :
1/f1, 8/f2, 2/f3, 10/f4, 3/f5, 12/f6, 4/f7, 14/f8, 5/f9, 16/f10, . . . , 10/f19, 26/f20, . . .
Where, n is a positive even integer,and f1, f2, f3, . . . are Fibonacci numbers.


Source Code:

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

int fibo(int);

int main()
{
 int i,n;
 float j,f;
 int n1=1,n2=6;
 clrscr();
 printf("enter the range of the series:");
 scanf("%d",&n);
 if(n%2==0)
 {
  printf("\n the series is:\n\n");
  for(i=1;i<=n;i++)
  {
   if(i%2!=0)
   {
    printf("%d/%d",n1++,fibo(i));
   }
   else
    printf("%d/%d",n2+=2,fibo(i));
  }
  n1=1,n2=8;
  printf("\n\n=>");
  for(i=1;i<=n;i++)
  {
   f=fibo(i);
   if(i%2!=0)
   {
    j=n1/f;
    n1++;
    printf("%g   ",j);
   }
   else
   {
    j=n2/f;
    n2=n2+2;
    printf("%g   ",j);
   }
  }
 }
 else
  printf("the range is:");

 getch();
 return 0;
}

int fibo(int n)
{
 if(n==1||n==2)
  return 1;
 else
  return(fibo(n-1)+fibo(n-2));
}
output

enter the range of the series:6

 the series is:

1/1    8/1    2/2    10/3    3/5    12/8

=>1   8   1   3.33333   0.6   1.5