Example: Armstrong Number in C++ using Recursion

C
C++
C#
Java
Python
PHP
// Armstrong Number in C++ using Recursion
#include <bits/stdc++.h>
#include <cmath>
using namespace std;

// This function will check input number is Armstrong or not
// This will work recursively
int CheckArmstrong(int p) {
    if (p > 0)
        return (pow(p %10, 3) + CheckArmstrong(p / 10));
}

// It's the driver function
int main() {
    int x; // To store the input number

    cout << "-----Enter the integer number-----\n";
    cin >> x;

    // It will produce the final output

    if ((int) CheckArmstrong(x) == x)
        cout << x << " is an Armstrong number.\n";
    else
        cout << x << " is not an Armstrong number.\n";
    
    return 0;
}