Example: C++ program to find factorial of a number using recursion

C
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// C++ program to find factorial of a number using recursion
#include <bits/stdc++.h>
using namespace std;

// @recursive function to find the factorial
long int RecursiveFacto(int fact_number) {
    if (fact_number >= 1)
        return fact_number * RecursiveFacto(fact_number - 1);
    else
        return 1;
}


// @driver function to call & find
// @factorial of a number using recursion
int main() {
    int fact_number = 0;

    cout << "Enter a positive integer number: ";
    cin >> fact_number;

    // It will call the RecursiveFacto() function
    cout << "\nFactorial of " << fact_number << " is: " << RecursiveFacto(fact_number) << endl;

    return 0;
}