manipulate-integer-bytes.c

#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>

struct A {
  bool a:1;
  bool b:1;
  bool c:1;
  bool d:1;
};

struct B {
  int a;
};

int main() {
  struct A* pa = malloc( sizeof(struct A) );
  struct B* pb = (struct B*) pa;
  pa->a = 0;
  pa->b = 1;
  pa->c = 1;
  pa->d = 0;

  printf("value of pb->a is %i\n", pb->a);

  return 0;
}