We start by surveying parameter-passing mechanisms in a variety of languages prior to discussing implementation strategies for these mechanisms.
12.3.1 Pass-by-Value
Pass-by-value is a parameter-passing mechanism in which copies of the arguments are passed to the function. For this reason, pass-by-value is sometimes referred to as pass-by-copy. Consider the classical swap function in C:
C only passes arguments by value (i.e., by copy). Figure 12.2 shows the run-time stack of this ...
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