C++ 맵 find()

1 개요

C++ 맵 find()

#include <iostream>
#include <map>
using namespace std;

int main() {
    map<string, int> m;
    m["a"] = 40;
    m["b"] = -74;
    
    cout << (m.find("a") != m.end()) << endl; // 1 (exists)
    cout << (m.find("x") != m.end()) << endl; // 0 (not exists)
}

#include <iostream>
#include <map>
using namespace std;

int main() {
    map<string, int> m;
    m["apple"] = 40;
    m["lemon"] = -74;

    cout << m.find("apple")->second << endl; // 40
    cout << m.find("lemon")->second << endl; // -74
    cout << m.find("onion")->second << endl; // 1864668064 (not exists)
}

2 같이 보기

• C++ 맵
• C++ find()
• C++ 맵 키 있는지 확인

3 참고

• https://cplusplus.com/reference/map/map/find/