title: Add Two Numbers Without Using Arithmetic Operators
signature: int addTwoNumbersWithoutUsingArithmeticOperators(int x, int y) {
test_code: #include <algorithm>
  #include <assert.h>
  #include <cstdlib>
  #include <iostream>
  #include <map>
  #include <set>
  #include <string>
  #include <tuple> 
  #include <unordered_map>
  #include <vector>
  #include <math.h>
  #include <cmath>
  #include <bits/stdc++.h>
  #include <numeric>
  #include <functional>
  
  using namespace std;
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  bool validateSolution(int actual, int expected){
      return actual == expected;
  }
  
  string driver(int x, int y, int expected){
      try
      {
          if (validateSolution(PLACEHOLDER_FN_NAME(x, y), expected)){
              return "PASSED";
          }
          return "FAILED";
      }
      catch (const std::overflow_error& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (const std::runtime_error& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (const std::exception& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (...)
      {
          return "UNK_ERROR";
      }
  }
  
  int main() {
      string result = "";
  
      result = driver(56, 60, 116); 
      cout << "TEST-" << 0 << "..."
           <<  result
           << "\n";
  
      result = driver(17, 44, 61); 
      cout << "TEST-" << 1 << "..."
           <<  result
           << "\n";
  
      result = driver(73, 96, 169); 
      cout << "TEST-" << 2 << "..."
           <<  result
           << "\n";
  
      result = driver(75, 3, 78); 
      cout << "TEST-" << 3 << "..."
           <<  result
           << "\n";
  
      result = driver(27, 54, 81); 
      cout << "TEST-" << 4 << "..."
           <<  result
           << "\n";
  
      result = driver(61, 1, 62); 
      cout << "TEST-" << 5 << "..."
           <<  result
           << "\n";
  
      result = driver(65, 63, 128); 
      cout << "TEST-" << 6 << "..."
           <<  result
           << "\n";
  
      result = driver(22, 19, 41); 
      cout << "TEST-" << 7 << "..."
           <<  result
           << "\n";
  
      result = driver(61, 9, 70); 
      cout << "TEST-" << 8 << "..."
           <<  result
           << "\n";
  
      result = driver(97, 23, 120); 
      cout << "TEST-" << 9 << "..."
           <<  result
           << "\n";
  
      return 0;
  }
source_py: def add_two_numbers_without_using_arithmetic_operators(x, y):
      while (y != 0):
          carry = (x & y)
          x = (x ^ y)
          y = (carry << 1)
      return x
source_cpp: int add_two_numbers_without_using_arithmetic_operators(int x, int y) {
    while ( y != 0 ) {
      int carry = x & y;
      x = x ^ y;
      y = carry << 1;
    }
    return x;
  }