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The preprocessor directive which checks whether a constant expression results in a zero or non-zero value __________

The preprocessor directive which checks whether a constant expression results in a zero or non-zero value __________ Correct Answer #if

#if checks whether a constant expression results in zero or not. If the expression is a non-zero value, then the statements between #if and #endif will be executed. If the constant expression results in a zero value, the statements between #if and #endif will not be executed.

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