How do I use const iterators with std::map in C++11?

Can you explain how to use const iterators with std::map in C++11?

Sure! In C++11, you can use const iterators to traverse a std::map without modifying its elements. Here's a simple example.

What does the syntax look like for declaring a const iterator?

You can declare a const iterator like this: std::map<int, std::string>::const_iterator it = myMap.cbegin();.

How do I access the key and value using the const iterator?

You can access the key and value using it->first for the key and it->second for the value.

Can you show me a complete example?

Absolutely! Here's a complete example:

#include <iostream>
#include <map>

int main() {
    std::map<int, std::string> myMap = {{1, "one"}, {2, "two"}, {3, "three"}};
    for (std::map<int, std::string>::const_iterator it = myMap.cbegin(); it != myMap.cend(); ++it) {
        std::cout << it->first << " : " << it->second << std::endl;
    }
    return 0;
}