In this post, you’ll learn how to add a char to a string, and how do I remove a character from a string? How do I use the push-back() method in strings? Can I use the push-back() and pop-back() methods in std::string the same way I do in std::wstring? By learning how to add a char to a string and using push-back methods in string and pop-back methods in std: string, it will help you build C++ applications with the use of C++ software.