快速访问std :: map的元素

#include <iostream>
#include <map>

int main() {
    std::map<int, std::string> myMap;
    myMap[1] = "apple";
    myMap[2] = "banana";
    myMap[3] = "orange";

    // 查找键值为2的元素
    std::map<int, std::string>::iterator it = myMap.find(2);
    if (it != myMap.end()) {
        std::cout << "Element found: " << it->second << std::endl;
    } else {
        std::cout << "Element not found" << std::endl;
    }

    return 0;
}

Element found: banana