c_cpp 允许您在C中编写和重新定位void指针

Posted 2021-05-14

#include "stdio.h"
#include "stdlib.h"

//write any type to bytes and push along that many bytes


int main(void) {
  void* barray = malloc(80);
  void* barraycp = barray;
  void* newad = (barraycp += (*(long*)barraycp = 7)); // this expression can write and give new position of pointer
  printf("The byte at new address is %ld\n",*(long*)newad ); 
  printf("Distance is %ld\n", newad - barray);
  return 0;
}