Functions, Recursion, Parameter Passing & Classes

#include <iostream.h>
#include <conio.h>

// Recursive function for Factorial
long factorial(int n) {
    if (n <= 1)
        return 1;
    else
        return n * factorial(n - 1);
}

// Recursive function for Nth Fibonacci term
int fibonacci(int n) {
    if (n == 0)
        return 0;
    else if (n == 1)
        return 1;
    else
        return fibonacci(n - 1) + fibonacci(n - 2);
}

void main() {
    int num, fibTerms, i;

    clrscr();

    cout << "--- Recursion in Turbo C++ ---" << endl;
    cout << "Enter a positive integer for Factorial: ";
    cin >> num;

    cout << "Factorial of " << num << " (" << num << "!) = " << factorial(num) << endl;

    cout << "\nEnter number of terms for Fibonacci Series: ";
    cin >> fibTerms;

    cout << "Fibonacci Series: ";
    for (i = 0; i < fibTerms; i++) {
        cout << fibonacci(i) << " ";
    }
    cout << endl;

    getch();
}