Online C++ Compiler

#include<iostream> using namespace std; string tidyNum(string number) { for (int i = number.length()-2; i >= 0; i--) { if (number[i] > number[i+1]) { number[i]--; for (int j=i+1; j<number.length(); j++) number[j] = '9'; } } return number; } int main() { string str = "45000"; string num = tidyNum(str); cout << "The tidy number is: " << num; }