Write a recursive function to generate n

Input any number: 10

Output 10th fibonacci term: 55

fibo(0) = 0

fibo(1) = 1

fibo(num) = fibo(num-1) + fibo(num+2)

Happy coding ;)

^{th}fibonacci term in C programming. How to generate n^{th}fibonacci term in C programming using recursion.**Example:**Input any number: 10

Output 10th fibonacci term: 55

### Required knowledge

Basic C programming, Function, Recursion, Fibonacci series### Logic to find nth Fibonacci term

In one of my previous post I had already explained what is Fibonacci number and how to generate Fibonacci series using for loop. Here in this post I will be explaining how to generate n^{th}Fibonacci term using recursion. When talking about recursive function we must be clear with the**base condition**of the recursion which is explained below.fibo(0) = 0

**{Base condition}**fibo(1) = 1

**{Base condition}**fibo(num) = fibo(num-1) + fibo(num+2)

### Program to find nth fibonacci term

/** * C program to find nth Fibonacci term using recursion */ #include <stdio.h> //Function declaration long long fibo(int num); int main() { int num; long long fibonacci; //Reads number from user to find nth fibonacci term printf("Enter any number to find nth fiboacci term: "); scanf("%d", &num); fibonacci = fibo(num); printf("%dth fibonacci term is %lld", num, fibonacci); return 0; } /** * Recursive function to find nth Fibonacci term */ long long fibo(int num) { if(num == 0) //Base condition return 0; else if(num == 1) //Base condition return 1; else return fibo(num-1) + fibo(num-2); //Recursively calls fibo() to find nth fibonacci term. }

Output

Enter any number to find nth fiboacci term: 10

10th fibonacci term is 55

10th fibonacci term is 55

**Note:**Some compilers doesn't supports long long type so you may replace it with long and the format specifier with %ld to overcome the compilation error if any.

Happy coding ;)

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