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If a program has 4 functions then will all of them be able to access the data held by a global variable?

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If a program has 4 functions then will all of them be able to access the data held by a global variable?

(a) Yes

(b) No

This question was addressed to me in exam.

The question is from Variable Scope and Qualifiers topic in division Arduino Programming of Arduino

1 Answer

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The correct answer is (a) Yes

Easy explanation: Any global variable when defined in a program automatically is open for all functions present in the program to access and perform read or write operations. On the contrary any variable defined within the scope of a function, will only be able to be accessed within the function itself.

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