Should Unused Return Values Be Explicitly Cast to Void in C and C ?

Explicit Casting of Unused Return Values to Void

In C and C , it is possible to cast an unused return value to void. This practice has sparked debate as some argue it is unnecessary, while others maintain its value.

One reason for explicitly casting unused return values is to make it clear to other developers that the return value is intentionally ignored. This is particularly useful in cases where the return value might normally be significant but is intentionally ignored due to a specific design decision.

Casting unused return values to void also ensures that potential error codes are explicitly handled. This helps prevent runtime errors caused by uncaught errors.

While some prefer to avoid explicit casting altogether, it is generally agreed that the c-style casting syntax is appropriate in this specific scenario. Overloaded operators using function call notation should be exempted from this casting to maintain code clarity.

In summary, casting unused return values to void serves the purpose of explicit communication to other developers and ensures that potential error codes are appropriately handled.

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