Stdle #95 · containers · 2026-09-09
What does this C++ snippet output?
A past puzzle — fully playable. 4 attempts, hints on wrong guesses.
#include <iostream>#include <vector>int main() { std::vector<int> a = {1, 2}, b = {3, 4}; a.swap(b); std::cout << a[0] << " " << b[0] << "\n";}Containers