The primary difference between call by reference using ref versus out is ____.
A) ref requires the original argument be initialized, out doesn't
B) out can only be used with integral memory types, ref can be used with any type
C) ref requires the keyword ref be included in the call and heading, out doesn't
D) ref is pass by reference

Question

The primary difference between call by reference using ref versus out is ____.
A) ​ref requires the original argument be initialized, out doesn't
B) ​out can only be used with integral memory types, ref can be used with any type
C) ​ref requires the keyword ref be included in the call and heading, out doesn't
D) ​ref is pass by reference

Quizplus · Accepted Answer

The primary difference between call by reference using ref versus out is that ref requires the original argument be initialized, whereas out does not. Both ref and out allow for pass by reference instead of pass by value, but only out allows for the passing of uninitialized variables. The keyword "ref" is required in both the call and heading for ref, but not for out. Additionally, both ref and out can be used with any type, not just integral memory types.

The Primary Difference Between Call by Reference Using Ref Versus