Question

I have a path, for example, named

/my/path/test/mytestpath

, and I want to judge if it start with a given path, for example

/my/path

Answer 1

std::string::find() returns the index at which a string was found, with an index of 0 being the start of the string:

std::string path("/my/path/test/mytestpath");

// This will check if 'path' begins with "/my/path/".
//
if (0 == path.find("/my/path/"))
{
    // 'path' starts with "/my/path".
}