TOUPPER - convert lower case letter to upper case.

(ANSI Standard)

Usage:

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

Where:

int lower;

is the lower case character you want to convert.

int upper;

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

Description:

"toupper" converts a lower case letter to upper case.

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