Syntax:

    #include <string>
    size_type find_last_of( const string& str, size_type index = npos );
    size_type find_last_of( const char* str, size_type index = npos );
    size_type find_last_of( const char* str, size_type index, size_type num );
    size_type find_last_of( char ch, size_type index = npos );

The find_last_of() function either:

* does a reverse search from index, returning the index of the first character

  within the current string that matches any character in str, or string::npos
  if nothing is found,

  the first num characters in str, returning the index in the current string of
  the first character found, or string::npos if no characters match,

  occurrence of ch in the current string, string::npos if nothing is found.

Related Topics: find, find_first_not_of, find_first_of, find_last_not_of, rfind