hi,

i would like to know how to convert a string, declare with the stl, in
uppercase or lowercase ?
with the string type in the borland classlib, there is .lower() and
.upper() functions.

thank you !

Olivier
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Olivier Mandavy <mandavy@alpes-net.fr> writes:

>i would like to know how to convert a string, declare with the stl, in
>uppercase or lowercase ?

Given the declaration

 string s;

the code

 transform(s.begin(), s.end(), s.begin(), my_toupper);

where my_toupper is defined by

 #include <ctype.h>
 inline unsigned char my_toupper(unsigned char c) { return toupper(c); }

will do the trick.  Or alternately you could use

 for_each(s.begin(), s.end(), make_upper);

where make_upper is defined by

 #include <ctype.h>
 inline void make_upper(char &c) { c = toupper((unsigned char) c); }

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