+= Operator

How can I use the append() method of std::string? How can I append a string to another string in a C++ app? Can we append a char array to a string? How can I append a number of chars to a string? Is it possible to add a substring of a string to another string? Here are the answers with C++ examples. A little word about C++ strings Generally, as an introduction to C++, in addition to int…