pointers.c

#include <stdio.h>
#include <string.h>

struct test {
    int a;
    int b;
    int* c;
};

void main()
{
    struct test blah;
    blah.a = 5;
    blah.b = 3;
    blah.c = &blah.a;

    printf("blah.a: %d | blah.c: 0x%08x | *blah.c: %d\n", blah.a, blah.c,*blah.c);
    FILE *f = fopen("test.bin", "wb");
    fwrite(&blah, 1, sizeof(struct test), f);
    fclose(f);
    memset(&blah, 0, sizeof(struct test));

    struct test bloop;
    f = fopen("test.bin", "rb");
    fread(&bloop, 1, sizeof(struct test), f);
    fclose(f);

    printf("bloop.a: %d | bloop.c: 0x%08x | *bloop.c: %d\n", bloop.a, bloop.c, *bloop.c);
}