From: Tim Bain <tpb2@duke.edu>
  To  : 
  Date: Tue, 09 Feb 1999 21:22:16 -0500

Re: tolower & other useful string functions....

Michael Abernethy wrote:

>  I've looked through the STL and not found anything.
>  I think writing the functions yourself wouldn't be that difficult.
>
>  something like
>
>  void lowercase(string & str)
>  {
>   int i;
>   for (i=0; i<str.size(); i++)
>       {
>        if (str[i] < 'a')
>            str[i] = str[i] +('a' - 'A');
>       }
>  }

You would want to make the if statement read:

if ((str[i]>='A')&&(str[i]<='Z'))
        str[i] = str[i]+('a'-'A')

because there are a lot of non-letter characters that
are less than 'a', and you wouldn't want to change
them...

Tim