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Which is correct syntax to access the static member functions with class name?

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Which is correct syntax to access the static member functions with class name?

(a) className . functionName;

(b) className -> functionName;

(c) className : functionName;

(d) className :: functionName;

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This question is from Static Member Functions topic in division Exception Handling & Static Class Members of Object Oriented Programming

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Correct option is (d) className :: functionName;

Easiest explanation - The scope resolution operator must be used to access the static member functions with class name. This indicates that the function belongs to the corresponding class.

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