std::map in C++

std::map in C++ — a practical guide to C++ std::map with clear examples you can reuse in real projects.

C++ Tutorial Series (90/111). Prefer one article? Read the complete C++ tutorial.

Short description

operator[] default-constructs missing values — use find/insert carefully.

map

#include <map>
std::map<std::string, int> ages;
ages["Asha"] = 30;