What is the C equivalent for reinterpret_cast

Question

Hi

What is the C equivalent for reinterpret_cast?

Thanks

Answer 1

C-style casts just look like type names in parenthesis:

void *p = NULL;
int i = (int)p; // now i is most likely 0

Obviously there are better uses for casts than this, but that's the basic syntax.

Answer 2

A c-style cast:

int* two = ...;
pointerToOne* one = (pointerToOne*)two;

Answer 3

You can freely cast pointer types in C as you would any other type.

To be complete:

void *foo;
some_custom_t *bar;
other_custom_t *baz;
/* Initialization... */
foo = (void *)bar;
bar = (some_custom_t *)baz;
baz = (other_custom_t *)foo;

Answer 4

int *foo;
float *bar;

// c++ style:
foo = reinterpret_cast< int * >(bar);

// c style:
foo = (int *)(bar);