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Clarified function call by value description.

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Levi Bostian 2013-08-31 17:04:47 -05:00
parent 79fdd62c6b
commit 41f65bb341
1 changed files with 6 additions and 2 deletions
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@ -433,8 +433,12 @@ int getInt(char w) { //parameter name does not need to match function prototype
}
/*
Functions are pass-by-value, but you can make your own references
with pointers so functions can mutate their values.
Functions are call by value. So when a function is called, the arguments passed
to the function are copies of original arguments (except arrays). Anything you
do to your arguments do not change the value of the actual argument where the
function was called.
You can use pointers if you need to edit the original argument values.
Example: in-place string reversal
*/