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 vote182 views1 answer
Pca compact trick
C++
0 vote169 views1 answer
Find Subarray sum using c++
C++
7 votes175 views3 answers
C++ replace
C++
2 votes172 views1 answer
Unordered_map of pair and int
C++
0 vote168 views1 answer
How to change the icon of an exe in c++
C++
104 votes225 views6 answers
Convert int to string c++
C++
10 votes156 views3 answers
Initialise 2d vector in c++
C++
-3 votes190 views1 answer
Array c plus plus
C++
12 votes159 views6 answers
Loop through map c++
C++
0 vote168 views1 answer
How to cehck if list has element c++
C++