How to Delete a Key-Value Pair from a Map in C++?

// C++ program to delete the key-value pair from a map
#include <iostream>
#include <map>

using namespace std;

int main()
{
    // Creating a map
    map<int, string> myMap;

    // Inserting key-value pairs into the map
    myMap[1] = "One";
    myMap[2] = "Two";
    myMap[3] = "Three";

    // Displaying the map before deletion
    cout << "Map before deletion:" << endl;
    for (const auto& pair : myMap) {
        cout << pair.first << ": " << pair.second << endl;
    }

    // Finding the iterator for the key to be deleted
    int key = 2;
    auto it = myMap.find(key);

    // Deleting the key-value pair using erase()
    if (it != myMap.end()) {
        myMap.erase(it);
    }

    // Displaying the map after deletion
    cout << "\nMap after deletion:" << endl;
    for (const auto& pair : myMap) {
        cout << pair.first << ": " << pair.second << endl;
    }

    return 0;
}