Example: Fibonacci Series - Iterative in C++

// Fibonacci Series - Iterative
    #include <iostream>
    using namespace std;

    void printFibonacciIterative(int n) {
        // Step 1: Handle base cases for n=0 and n=1
        if (n <= 0) {
            cout << "Please enter a positive integer." << endl;
            return;
        }
        if (n == 1) {
            cout << "0" << endl;
            return;
        }

        // Step 2: Initialize the first two Fibonacci numbers
        int a = 0;
        int b = 1;

        // Step 3: Print the first two numbers
        cout << a << " " << b << " ";

        // Step 4: Loop from the 3rd term up to n
        for (int i = 2; i < n; ++i) {
            int next = a + b;
            cout << next << " ";
            a = b;
            b = next;
        }
        cout << endl;
    }

    int main() {
        int count = 10; // Number of Fibonacci terms to generate
        cout << "Fibonacci Series (Iterative for " << count << " terms): ";
        printFibonacciIterative(count);
        return 0;
    }