example1_basic_usage.cpp

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#include <iostream>
#include <map>
#include <string>

int main() {
    std::map<std::string, int> ages;

    // Inserting elements
    ages["Alice"] = 30;
    ages.insert({"Bob", 25});
    ages.insert(std::make_pair("Charlie", 35));

    // Accessing elements
    std::cout << "Alice's age: " << ages["Alice"] << std::endl;

    // Checking if a key exists
    if (ages.find("David") == ages.end()) {
        std::cout << "David is not in the map" << std::endl;
    }

    // Iterating through the map
    for (const auto& pair : ages) {
        std::cout << pair.first << " is " << pair.second << " years old" << std::endl;
    }

    // Size of the map
    std::cout << "Number of entries: " << ages.size() << std::endl;

    // Removing an element
    ages.erase("Bob");

    return 0;
}