=====find_last_not_of===== Syntax: #include size_type find_last_not_of( const string& str, size_type index = npos ); size_type find_last_not_of( const char* str, size_type index = npos ); size_type find_last_not_of( const char* str, size_type index, size_type num ); size_type find_last_not_of( char ch, size_type index = npos ); The find_last_not_of() function either: * returns the index of the last character within the current string that does not match any character in str, doing a reverse search from index, string::npos if nothing is found, * returns the index of the last character within the current string that does not match any character in str, doing a reverse search from index, string::npos if nothing is found, * returns the index of the last character within the current string that does not match any of the first num characters in str, doing a reverse search from index, string::npos if nothing is found, * returns the index of the last character within the current string that does not match ch in the current string, doing a reverse search from index, string::npos if nothing is found. For example, the following code searches for the last non-lower-case character in a mixed string of characters: string lower_case = "abcdefghijklmnopqrstuvwxyz"; string str = "abcdefgABCDEFGhijklmnop"; cout << "last non-lower-case letter in str at: " << str.find_last_not_of(lower_case) << endl; This code displays the following output: last non-lower-case letter in str at: 13 Related Topics: [[find]], [[find_first_not_of]], [[find_first_of]], [[find_last_of]], [[rfind]]