Programming Tips - How do I get the last character of a std::string ?

Date: 2010may14 Language: C/C++ Level: beginner Q. How do I get the last character of a std::string ? A. Like this:
std::string mystring; char last_char; last_char = mystring[mystring.length() - 1];
You can make function that does it:
inline char getlastchar(std::string &s) { if (s.length() == 0) return '\0'; return s[s.length() - 1]; }