TOLOWER - convert upper case letter to lower case.

(ANSI Standard)

Usage:

#include <ctype.h>
lower = tolower(upper);

Where:

int upper;

is the upper case character you want to convert.

int lower;

is the resulting lower case letter. If "upper" is not an upper case letter, the result of "tolower" is the same as the argument value.

Description:

"tolower" converts an upper case letter to lower case.

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