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 vote287 views1 answer
Compile c++ program
C++
3 votes273 views1 answer
How to convert qt string to string
C++
0 vote322 views2 answers
Why magnetron should be placed inside solenoid
C++
18 votes304 views3 answers
Sort in descending order c++ stl
C++
0 vote297 views1 answer
C++ read entire file into a variable
C++
0 vote336 views1 answer
C++ insertion in astack
C++
0 vote281 views1 answer
RotateArray
C++
1 vote308 views1 answer
For loop vector
C++
2 votes308 views4 answers
For loop with array c++
C++
1 vote288 views1 answer
Chrono start time in c++
C++