C++ Quiz

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Question #35 Difficulty:

According to the C++11 standard, what is the output of this program?

#include <iostream>
#include <vector>

int main() {
  std::vector<int> v1(1, 2);
  std::vector<int> v2{ 1, 2 };
  std::cout << v1.size() << v2.size();
}

Hint:

Which constructors are invoked for v1 and v2? How is a vector constructed from an initializer list?

Answer:

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