Write a C Program to generate the first n terms of the Fibonacci series.

#include<stdio.h>

void main()

{

   int f,s,t,n,i; //’f’ is 1st num,’s’ is 2nd num,’t’ for 3rd new generated num, ‘n’ is no.of terms, ‘i’ is for iterations.

   printf(“Enter a value : “);

   scanf(“%d”,&n); // Read the number terms to print from the series.

   if(n<=0)

   {

      printf(“Please enter a valid number\n”);

      return;

   }

   f=0;

   printf(“The FIBONACCI Series is :\n%d”,f);

   if(n>1)

   {

      s=1;

      printf(“\t%d”,s);

   }

   else

      return;

   for(i=2;i<n;i++)

   {

      t=f+s;//By adding of preceding numbers next numbers will generate in Fibonacci series.

      printf(“\t%d”,t);

      f=s;

      s=t;//Shifting the last two terms of series to ‘f’ & ‘s’ for generating next number in the series.

   }

   return;

}

Output:

i) Enter a value : 16

The FIBONACCI Series is :

0 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610

ii) Enter a value : 0

Please enter a valid number

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Task: Write a C program to generate the given range of terms of Fibonacci series.

For example user entered 7 & 10 then output will be: 8 13 21 34