Quiz · Containers and Iterators · lesson 4 of 11
Quiz — operator[] on a map
What does the program print?
#include <iostream>
#include <map>
#include <string>
int main() {
std::map<std::string, int> m{{"a", 1}};
int b = m["b"];
std::cout << b << ' ' << m.size() << '\n';
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