My code

… was written in C++11 and can be compiled with G++, Clang++, Visual C++. You can download it, too. Or just jump to my GitHub repository.

       
#include <iostream>
       
 
       
int main()
       
{
       
  unsigned int tests;
       
  std::cin >> tests;
       
  while (tests--)
       
  {
       
    unsigned long long last;
       
    std::cin >> last;
       
 
       
    unsigned long long sum = 0;
       
    // first Fibonacci numbers
       
    unsigned long long a = 1;
       
    unsigned long long b = 2;
       
 
       
    // until we reach the limit
       
    while (b <= last)
       
    {
       
      // even ?
       
      if (b % 2 == 0)
       
        sum += b;
       
 
       
      // next Fibonacci number
       
      auto next = a + b;
       
      a = b;
       
      b = next;
       
    }
       
 
       
    std::cout << sum << std::endl;
       
  }
       
  return 0;
       
}

This solution contains 5 empty lines, 4 comments and 1 preprocessor command.