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The difference between pass by value and reference

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What is the difference between using a pass by value and pass by reference with a compiler?

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Solution Summary

This solution provides a detailed explanation of the difference between passing by value and passing by reference from the perspective of a compiler.

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First let's explain what pass by value and pass by reference mean and then we'll look at how the compiler handles them differently.

Pass by value is the case where the "value" of an argument is passed to the function being called. It is easiest to think of this as a copy of the original item. Pass by reference is the alternative to pass by value. With pass by reference, the actual object (or a reference to it) is passed to the function.

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