This is our third bug for you to track down and eradicate. You can find the first bug here! How good are you at finding bugs in code? The following is a code snippet compiles fine. Unfortunately, it contains an error. Take a look at the code listing and see if you can find the error. To make it easier, several options are listed. One of the options is correct, while the others are not.
Can you find the error without looking at the choices?
Bug Buster #3
Here is the Bug Buster:
The code:
#include <algorithm>
#include <vector>
#include <array>
#include <iostream>
int main()
{
std::array<int, 10> input =
{ 1, 2, 3, 3, 5,
6, 7, 8, 9, 10 }; // 'random' input
// copy odd numbers in new vector
std::vector<int> odds(5); // new container for odd numbers
auto it = std::copy_if(input.begin(),
input.end(),
odds.begin(),
/*copy odd nbrs */ [](int i) { return i % 2; });
// shrink container:
odds.resize(std::distance(odds.begin(), it));
for (const auto& x : odds)
std::cout << x << std::endl;
return 0;
}
Your choices:
How quickly can you find the issue? Feel free to comment on how quick you were! We will be posting additional snippets over the coming weeks with additional bugs for you to bust. You can click to the next page to find the solution.