toupper.c File Reference

#include <ctype.h>

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Functions
int	toupper (int c)
	Converts the given character to lowercase. More...

Function Documentation

toupper()

int toupper

(

int

ch

)

Converts the given character to lowercase.

Converts the given character to lowercase according to the character conversion rules defined by the default local, i.e. the following lowercase letters (abcdefghijklmnopqrstuvwxyz) are replaced with respective uppercase letters (ABCDEFGHIJKLMNOPQRSTUVWXYZ).

The behavior is undefined if the value of ch is not representable as unsigned char and is not equal to EOF.

Parameters

ch	character to be converted.

Returns

Uppercase version of ch or unmodified ch if no uppercase version is listed in the default locale.

References islower().

Referenced by bad_input(), good_input(), and towupper().

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