Question discussion

Which statement about the 'ref' and 'out' parameters in C# is correct?

1170Medium DSSSB TGT Computer Science 0 replies 1 views

AAn argument passed with ref must be initialised before the call, but one passed with out need not be
BBoth ref and out arguments must be initialised before the call
CAn out argument must be initialised before the call, but a ref argument need not be
DNeither ref nor out can be used with value types

Correct answer: A

Explanation

ref requires an already-initialised variable, while out only requires the method to assign the variable before returning.

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