14.1

stack(automatic memory) implicitly handled by the compiler

void func() {

int x;

…

}

heap: explicitly handled by you, the programmer

void func() {

int *x = (int *) malloc(sizeof(int));

…

}

why put (int *) cast? (void *) and (int *) is physically the same, but for (void *), the compiler does not know the pointer arithmetic and dereferencing

14.2

man malloc

#include <stdlib.h>

…

void *malloc(size_t size);