#include <ctype.h>int tolower(int ch);

The tolower( ) function returns the lowercase equivalent of ch if ch is a letter; otherwise, ch is returned unchanged.

A related function is toupper( ).

C(s)C++ Programmer's Reference
C Programming on the IBM PC (C Programmers Reference Guide Series)
ISBN: 0673462897
EAN: 2147483647
Year: 2002
Pages: 539 © 2008-2017.
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