#include <stdio.h>
#include <stdint.h>

struct product
{
    uint8_t record_id;
    unsigned int product_id;
    char name[10];
    unsigned int amount;
};

struct customer
{
    uint8_t record_id;
    unsigned int customer_id;
    char name[20];
    char address[30];
    double balance;
};


struct product p1 = {1,456,"Shoe",6};
struct product p2 = {1,891,"Lace",9};
struct product p3 = {1,1983,"Wheel",116};
struct customer c1 = {2,98,"Donald Duck","1313 Webfoot Walk",-345.12};
struct customer c2 = {2,100,"Huey Duck","1313 Webfoot Walk",0.0};
struct customer c3 = {2,34,"Daisy Duck","899 Webfoot Walk",23.12};
struct customer c4 = {2,201,"Scrooge McDuck","1212 Killmotor Hill",-900.0};

main(int c,char **a)
{
      FILE *fp = fopen("bin_data","w");

      fwrite(&p1,sizeof(p1),1,fp);
      fwrite(&c1,sizeof(c1),1,fp);
      fwrite(&c2,sizeof(c2),1,fp);
      fwrite(&p2,sizeof(p2),1,fp);
      fwrite(&c3,sizeof(c3),1,fp);
      fwrite(&p3,sizeof(p3),1,fp);
      fwrite(&c4,sizeof(c4),1,fp);
}