tolower()

#include <ctype.h>

int tolower(int c);

C/C++ function that returns the lower-case version of the letter represented by c. If c is not an alphabetical, it will be returned unchanged.

#include <ctype.h>

int tolower( int character );

This function converts character from uppercase to lowercase . If character is not 'A' through 'Z' tolower() will simply return character.

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