Incrementing integer pointer will increase the address by size of integer.
What will happen if we increment a function pointer?
Incrementing integer pointer will increase the address by size of integer. What will happen
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Incrementing integer pointer will increase the address by size of integer.
What will happen if we increment a function pointer?
Just as with
void *pointers and pointers to incomplete types, arithmetic is not allowed on pointers to functions.For example, C99 §6.5.6 on Additive operators says:
A function type is not an object type, so providing a pointer to a function as an operand of the
+operator is a violation of this constraint.As an extension to the C language, the GCC compiler allows arithmetic on pointers to functions (and pointers to
void). It implements this as if the pointed-to object had a size of 1. Note that in standards-conforming modes it issues a warning for such code.