Online C++ Compiler

#include <bits/stdc++.h> using namespace std; bool isDiv30(string num){ int n = num.length(); if(num[n - 1] != '0') return false; long sum = accumulate(begin(num), end(num), 0) - '0' * n; if(sum % 3 == 0) return true; return false; } int main() { string num = "353730746028908374890"; if(isDiv30(num)){ cout << "Divisible"; } else { cout << "Not Divisible"; } }