Write a c program to print Fibonacci Series using recursion. Given a positive integer n, we have to write a c code to print fibonacci series using recursion. This question is also very important in terms of technical interviews.

In my last post, I have already discussed C program to print fibonacci series using while, do while & for loop. Let's first understand, what is Fibonacci series?

In Fibonacci series, first two numbers are 0 and 1, and the remaining numbers are the

For example -

0 1 1 2 3 5 8 ......

You can clearly see first two numbers are 0 and 1 and the rest of the numbers are the sum of previous two numbers.

In this post, We will learn how to print Fibonacci series using recursion. So let's understand what is recursion.

C, C++ Interview Question

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In simple words, Recursive function is a

In recursion program, Always specify the

Recursion vs iteration - Difference between recursion and iteration

In this program, we take a number of elements to print in a fibonacci series as an input from user. Then our recursive method print fibonacci series upto that number.

0 1 1 2 3 5 8 13 21 34

Another way to write this program using recursion.

In my last post, I have already discussed C program to print fibonacci series using while, do while & for loop. Let's first understand, what is Fibonacci series?

**Fibonacci Series**In Fibonacci series, first two numbers are 0 and 1, and the remaining numbers are the

**sum of previous two numbers**.For example -

0 1 1 2 3 5 8 ......

You can clearly see first two numbers are 0 and 1 and the rest of the numbers are the sum of previous two numbers.

In this post, We will learn how to print Fibonacci series using recursion. So let's understand what is recursion.

C, C++ Interview Question

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**What is Recursion? **

In simple words, Recursive function is a

**function that calls itself**. Through recursion, We can write much cleaner and shorter code for complex problems.In recursion program, Always specify the

**base condition**(terminating condition) otherwise code will run infinitely until the program run out of memory.Recursion vs iteration - Difference between recursion and iteration

## C Program to Print Fibonacci Series Using Recursion

In this program, we take a number of elements to print in a fibonacci series as an input from user. Then our recursive method print fibonacci series upto that number.

#include<stdio.h> int fibonacci(int n){ /** if number is less than 2, In case of 0 and 1 */ if(n < 2) { return n; } //Recursive call return fibonacci(n-1) + fibonacci(n-2); } int main(){ int num; printf("Number of terms to print in a Fibonacci series"); scanf("%d", &num); for(int i = 0; i < num; i++) { printf(" %d ", fibonacci(i)); } return 0; }

**Output****Number of terms to print in a Fibonacci series 10**

0 1 1 2 3 5 8 13 21 34

Another way to write this program using recursion.

#include<stdio.h> void fibonacci(int n){ static int first = 0, second = 1, third; //If n is greater than zero if(n > 0){ third = first + second; printf(" %d ",third); first = second; second = third; /* Function call itself. */ fibonacci(n-1); } } int main(){ int num; printf("Number of terms to print in a Fibonacci series"); scanf("%d", &num); printf("%d %d",0,1); /* Frist two numbers (0,1) are printed, so we passed n-2 to fibonacci function. */ fibonacci(num-2); return 0; }

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Questions on Recursion for Practice

thanks

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