#include #include #include #include using namespace std; bool isNumber(const string& input); bool isNiven(const string& input); int main() { string input; cout << "Enter a number:\n\n"; getline(cin, input);//Enter a number if (isNumber(input)) {//checks if it was a valid input if (isNiven(input)) { cout << "You entered a Niven Number!" << endl; } else { cout << "The entered number was not a Niven.\nTry another number?" << endl; } } else { cout << "Not a number or you entered zero.\nTry again.\n" << endl; } return 0; } bool isNumber(const string& input) { stringstream ss(input); int number; if (ss >> number) { if (number == 0) return false; return true; } else { return false; } } bool isNiven(const string& input) { char ch; int number, total(0); stringstream ss(input); ss >> number; cout << "You entered: " << number << endl; for (int i = 0; i < input.length(); ++i) { ch = input[i]; if (i == 0) { cout << ch; } else { cout << "+ " << ch; } cout << " "; total += ((int)ch - 48); } cout << "= " << total << endl << endl; if (number % total == 0) { cout << number << " / " << total << " = " << number / total << endl; return true; } else { cout << number << " % " << total << " != 0\n\n"; } return false; }

[Challenge] Niven Number