Say a function takes a void pointer as an argument, like so: int func(void *p);
How can we determine or guess the type of what p is pointing to?
Say a function takes a void pointer as an argument, like so: int func(void
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Say a function takes a void pointer as an argument, like so: int func(void *p);
How can we determine or guess the type of what p is pointing to?
In general, you can’t. In some cases, if there is a guarantee on what p points to, you may be able to look at the contents at and after that address to find out. Generally, your function should know what it’s being passed, unless it just passes it along.
Data and function arguments in C are just a bunch of bits lumped together. Unless you use some of those bits to tell you what the bits are, there’s no consistent way to identify it.