UPPER CASE FUNCTION

is there a function that would make a string all upper case or lower case?  also tell me which library it is in

i use code warrior for macs and
microsoft visual C++ for pc
sarniscoolAsked:
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nietodConnect With a Mentor Commented:
toupper() in <ctype.h> capitalizes a single character.

the ctype class in <ctype> has a toupper() function that uppercases a string.
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