Variadic functions can accept a variable number of arguments, but are problematic. Variadic functions define an implicit contract between the function writer and the function user that allows the function to determine the number of arguments passed in any particular invocation. Failure to exercise care when invoking a variadic function to ensure that it knows when to stop processing arguments may result in undefined behavior.
Argument Processing
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In the following code example, the variadic function {{average()}} is used to determine the average value of its passed integer arguments \[[Seacord 05c|AA. C References#Seacord 05c]\]. The function processes arguments until it finds one with a value of {{\-1}}. |
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