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EXP12-EX1: If the return value is inconsequential or if any errors can be safely ignored, such as for functions called because of their side effects, the function should be explicitly cast to void to signify programmer intent. For an example of this exception, see the "compliant solution (Remove Existing Destination File)" under "Portable Behavior" section in FIO10-C. Take care when using the rename() function.
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