#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdbool.h> 
 
typedef struct header{
    bool status;    // 1
    size_t size;    // 8
    void** next;     // 8
    void** previous; // 8
}header_t;
 
int main(){
    void* PTR = malloc(800);
 
 
    header_t a;
    a.status = false;
    a.size = 14;
    a.next = &a;
 
    printf("%d\n", *((bool*)PTR));
    printf("%ld\n", *((int*)(PTR+8)));
    printf("%p\n", ((void*)(PTR+9)));
 
    return 0;
}

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