Whatrf is a "const void *src"

Question

In the following:

https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/memcpy-s-wmemcpy-s?view=msvc-170
C
errno_t memcpy_s(
void *dest,
size_t destSize,
const void *src,
size_t count
);

What exactly is a "const void *src"?

Answer 1

Hi, @Todd Chester

const void *src

You need to split it into two parts

1. Pointer to Constant

The address of pointers can be changed, but the value of the variable that the pointer points cannot be changed.

E.g. const int* ptr;

2 .void pointer

A void* pointer can be converted into any other type of data pointer.

Best regards,

Minxin Yu

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