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how can i make toupper global so that all variable in char will be all upper?

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Member Avatar for ddanbe

Do you mean the toupper function?

Member Avatar for DavidB

toupper is a built-in function in C++, defined in <cctype>, so it should be accessible throughout the program.
Unless you have named one of your user-created sub-routines "toupper"--which is a really bad idea.

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