Differences between version 7 and revision by previous author of CastingPointerToFunction.
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| Newer page: | version 7 | Last edited on Wednesday, July 16, 2003 3:42:52 pm | by JohnMcPherson | Revert |
| Older page: | version 6 | Last edited on Wednesday, July 16, 2003 2:17:23 pm | by JosephPawletko | Revert |
@@ -27,9 +27,9 @@
* Jon was using it to "compile" something then jump to it in C, by casting an array as a function, then calling it.
* I use it frequently to do things like have a lookup table of name to function. For example in ircu, there is a function called "parse" which takes a line from a user, splits it up into a function and it's arguments, then scans through a table of functions and their names, when it finds one that matches that command, it calls the function with the arguments it parsed earlier. Nice 'n zippy.
-* Some functions take another function as an argument. See
the example below.
+* Some functions take another function as an argument. Probably the most well-known example is qsort(3) the quick sort algorithm -- you need to pass it an array and a function for comparing array elements. Also see
the example below.
from atexit(1):
#include <stdlib.h>
