C++ map key exists

if ( !(myMap.find("key") == myMap.end()) ) {	// "key" exists	
  
} else {	// not found	
  
}

C++ map key exists

#include <iostream>
#include <map>

using std::cout; using std::cin;
using std::endl; using std::map;
using std::string;

int main(){
    string key_to_find;
    std::map<string, string> lang_map = {{"j", "Julia",},
                                         {"p", "Python",},
                                         {"m", "MATLAB",},
                                         {"o", "Octave",},
                                         {"s", "Scala",},
                                         {"l", "Lua",}};

    for (const auto & [key, value] : lang_map) {
        cout << key << " : " << value << endl;
    }

    cout << "Enter the key to search for: ";
    cin >> key_to_find;

    if (lang_map.find(key_to_find) != lang_map.end()) {
        cout << "Key Exists!" << endl;
    }

    return EXIT_SUCCESS;
}

Source: delftstack.com

Similar codes

0 vote298 views1 answer
Uses of gamma rays
C++
0 vote267 views2 answers
Union of two arrays
C++
1 vote291 views1 answer
Check if point is left or right of vector
C++
1 vote263 views1 answer
Linked list with classes c++
C++
1 vote288 views1 answer
C++ check if debug or release visual studio
C++
0 vote292 views1 answer
Not c++
C++
0 vote288 views1 answer
How many months have 31 days
C++
0 vote292 views1 answer
How does header files work in c++
C++
2 votes318 views1 answer
Lopping over an array c++
C++
0 vote274 views1 answer
C++ capture screen as pixel array
C++