tolower

Converts a character to lowercase.

Format

#include  <ctype.h>

int tolower  (int character);

Argument

character

An object of type int representable as an unsigned char or the value of EOF. For any other value, the behavior is undefined.

Description

If the argument represents an uppercase letter, and there is a corresponding lowercase letter, as defined by character type information in the program locale category LC_TYPE, the corresponding lowercase letter is returned.

If the argument is not an uppercase character, it is returned unchanged.

Return Value

x	The lowercase letter corresponding to the argument. Or, the unchanged argument, if it is not an uppercase character.

---

Previous Page | Next Page | Table of Contents | Index