declare a string in C++

  std::string myString = "Hello World!";

This C++ code declares a string variable named “myString”. A string is a data type that holds a collection of characters. This line of code assigns the string literal “Hello World!” to the variable myString, creating an instance of a string. The “std::string” part is the namespace being used, which indicates the use of the C++ Standard Library string class. Without this namespace, the compiler wouldn’t know what to do with the string data type. Namespaces are used to organize code and to prevent naming conflicts.