C++ program to find Armstrong Numbers

// Program to find/generate Armstrong numbers #include using namespace std; bool isArmstrong(int x); int pow(int n, int power); int digits(long int n); int main () { int min=0, max=1000; cout << "Program to find Armstrong numbers..." << endl; cout << "Enter a range for the Armstrong number..." << endl; cout << endl << "Enter lowest value to test: "; cin >> min; cout << endl << "Enter highest value to test: "; cin >> max; cout << endl; for (int i=min; i<=max; i++) if (isArmstrong(i)) cout << i << endl; } bool isArmstrong (int x) { int n = x; int d = digits(x); int y=0, z=x; while (z>0) { x = z%10; y = y + pow(x, d); z /= 10; } if (y==n) return true; else return false; } int pow (int n, int power) { if (power == 1) return n; else return n * pow(n, power-1); } int digits(long int n) { if (n<10) return 1; else return 1+digits(n/10); }