Question

After using malloc() to initialize 5000 bytes of memory, how would I reference the bytes in this memory space? For example, if I need to point to a starting location of data within the memory, how would I go about that?

EDIT: Does it matter what I use to point to it? I mean I am seeing people use bytes/int/char? Is it relevant?

Error I get:

Answer 1

You can use the subscript array[n] operator to access the index you are interested in reading/writing, like so:

uint8_t* const bytes = (uint8_t*)malloc(5000);

bytes[0] = UINT8_MAX; // << write UINT8_MAX to the first element
uint8_t valueAtIndexZero = bytes[0]; // << read the first element (will be UINT8_MAX)
...
free(bytes), bytes = 0;