#include <iostream>
#include <map>
int main() {
// Step 1: Create a map
std::map<int, std::string> myMap = {{1, "One"}, {2, "Two"}, {3, "Three"}};
// Step 2: Display the original map
std::cout << "Original Map:" << std::endl;
for (const auto& pair : myMap) {
std::cout << pair.first << ": " << pair.second << std::endl;
}
// Step 3: Remove an item from the map using erase()
int keyToRemove = 2;
auto it = myMap.find(keyToRemove);
if (it != myMap.end()) {
myMap.erase(it);
}
// Step 4: Display the map after removal
std::cout << "\nMap after removing key " << keyToRemove << ":" << std::endl;
for (const auto& pair : myMap) {
std::cout << pair.first << ": " << pair.second << std::endl;
}
return 0;
}