Armstrong.cpp

#include <iostream>
using namespace std;
bool checkArmstrongNumber(int num);

int main(){
    int num;
    bool flag;
    cout<<"Enter a positive  integer: ";
    cin>>num;
    
    flag = checkArmstrongNumber(num);
    if(flag == true)
        cout<<num<<" is an Armstrong number.";
    else
        cout<<num<<" is not an Armstrong number.";
    
    return 0;
}

bool checkArmstrongNumber(int num) {
    int temp, sum=0, digit;
    bool isArm;
    
    temp = num;
    while(temp != 0) {
        digit = temp % 10;
        sum = sum +(digit * digit * digit);
        temp = temp/10;
    }
    if (sum==num)
        isArm = true;
    else
        isArm = false;
    
    return isArm;
}