Pair

INFO

A lightweight Data Structures vs. Abstract Data Types that stores two heterogeneous values as a single unit. Commonly used for returning multiple values from functions or storing key-value pairs in associative containers (Maps and Multimaps).

• Fixed Size: Always holds exactly two elements.
• Heterogeneous Types: T1 and T2 can be different.
• Direct Access: Members accessed via .first and .second.
• Utility-Oriented: Often used in maps, tuples, and algorithms.

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Declaration & Initialization

#include <utility> 
std::pair<int, std::string> p1 = {1, "Apple"};
std::pair<int, std::string> p2 = std::make_pair(2, "Banana");
std::pair<int, std::string> p3;
p3.first = 3;
p3.second = "Cherry";

IMPORTANT

need to include utility

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Member Functions