what is reference parameter?
what is out parameters?
what is difference these two?
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Answer Posted / sarun p.t
out is used only to get output from a function.
it means that we cannot give any input using an out
parameter. Whatever value we assign to an out parameter
before calling to a function will be worthless, we need to
assign a value in the called function to our out parameter
before its first usage and if no usage we need to assign a
value before control leave the function.(out can be passed
to function while uninitialized)
ref parameter is used for both input and output. The only
thing is we need to assign a value before its first usage.
ref parameter must be initialized before passing to a
function.
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