Answer
Pass-by-value: Copies the value; modifications do not affect the original.
Pass-by-reference: Passes the memory reference; modifications affect the original variable.
Quick Answer
Pass-by-value sends a copy — the method works on its own copy, original unchanged. Pass-by-reference (ref/out) sends the memory address — the method modifies the original variable. Value types default to pass-by-value; reference types pass the reference by value (the object itself is shared).
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ