How do you reverse a string in place in C or C++?

Question

How do you reverse a string in C or C++ without requiring a separate buffer to hold the reversed string?

Answer 1

Note that the beauty of std::reverse is that it works with char * strings and std::wstrings just as well as std::strings

void strrev(char *str)
{
    if (str == NULL)
        return;
    std::reverse(str, str + strlen(str));
}