C++ Program to Display Fibonacci Series

February 8, 2021 9:55 am IST

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What is Fibonacci Series?

A series of numbers in which each number (Fibonacci number) is the sum of the two preceding numbers, starting from 0 and 1, i.e., 0, 1, 1, 2, 3, 5, 8, 13, 21, and so on.

Tips: It is recommended to use our online Fibonacci Series calculator for better understanding.

Fibonacci Series between the Given Limit

In the following example, we will find the Fibonacci Series between 0 and 100.

Example

C++ Compiler

#include <iostream> using namespace std; int main() { int limit = 100; int a = 0; int b = 1; int c = a + b; cout << "Fibonacci series upto " << limit <<": \n"; cout << a << " " << b << " "; while(c <= limit) { cout << c <<" "; a = b; b = c; c = a + b; } return 0; }

Output

Fibonacci series upto 100: 0 1 1 2 3 5 8 13 21 34 55 89

Fibonacci Series between any given Limit

In the following example, we will display the fibonacci series from 0 to any given limit.

Example

C++ Compiler

#include <iostream> using namespace std; int main() { int limit; int a = 0; int b = 1; int c = a + b; cout << "Enter a (int) limit: "; cin >> limit; cout << "\nFibonacci series upto " << limit <<": \n"; cout << a << " " << b << " "; while(c <= limit) { cout << c <<" "; a = b; b = c; c = a + b; } return 0; }