Write a C, C++ program to print sum of Fibonacci Series. Given a positive integer n, print the sum of Fibonacci Series upto n term.

Let's first brush up the concept of Fibonacci series.

In Fibonacci series, the first two numbers are 0 and 1 , and the remaining numbers are the sum of previous two numbers.

Let's take another example, this time n is 8 ( n = 4). Then the

Print Fibonacci series using iterative approach

Print Fibonacci series using recursion

Sum of Fibonacci series for given range is : 33

C, C++ Interview Questions

Programming questions on Strings

Let's first brush up the concept of Fibonacci series.

### Fibonacci series

In Fibonacci series, the first two numbers are 0 and 1 , and the remaining numbers are the sum of previous two numbers.

Suppose, if input number is 4 then it's Fibonacci series is 0, 1, 1, 2. Now, we are finding sum of Fibonacci series so the

**output is****4**( 0 + 1 + 1 + 2).Let's take another example, this time n is 8 ( n = 4). Then the

**output is 33**( 0 + 1 + 1 + 2 + 3 + 5 + 8 + 13).Print Fibonacci series using iterative approach

Print Fibonacci series using recursion

## Program to Find Sum of Fibonacci Series - C Code

#include <stdio.h> int main(void) { int i, n, first = 0, second = 1, sum = 1, third; printf (" Enter the range \n"); scanf( "%d", &n); for(i = 2; i < n; i++){ /* Sum of previous two element */ third = first + second; sum = sum + third; first = second; second = third; } printf("Sum of Fibonacci series for given range is %d", sum); return 0; }

## Find Sum of Fibonacci Series - C++ Code

#include <iostream> using namespace std; int main() { int i, n, first = 0, second = 1, sum = 1, third; cout << " Enter the range \n"; cin >> n; for(i = 2; i < n; i++){ /* Print the sum of previous two element */ third = first + second; sum = sum + third; first = second; second = third; } cout << "Sum of Fibonacci series for given range is " << sum; return 0; }

**Output :****Enter the range : 8**

Sum of Fibonacci series for given range is : 33

C, C++ Interview Questions

Programming questions on Strings

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