Tried copying structure pointer to structure which is possible while the reverse is not possible: Can someone help out?

Question

typedef struct test {
int a;
int b;
} test1_t;

typedef struct core {
int c;
test1_t t;
}

typedef struct rcb {
int c;
test1_t *t;
}

void copy (rcb_t *rcb1, core_t *ptr);
int main() {
core_t *ptr;
rcb_t *rcb;
rcb_t *rcb1;
rcb_t r,r1;
r.c = 5;
r1.c = 0;
r.t = (test1_t *) malloc(sizeof(test1_t));
r1.t = (test1_t *) malloc(sizeof(test1_t));
r.t->b = 6;
r.t->a = 4;
r1.t->a = 8;
r1.t->b = 9;
rcb = &r;
ptr->c = rcb->c;
if(rcb->t) {
memcpy(&ptr->t, rcb->t, sizeof(test1_t));
}
rcb = &r1;
copy(rcb1,ptr);
return 0;
}

void copy (rcb_t *rcb1, core_t *ptr) {
rcb->c = ptr->c;
memcpy(rcb1->t->b, &(ptr->t.b),sizeof(test1_t));
}

Answer 1

Please remove the following thread because you have a better description of the topic and have good response on this thread. Hope you understand 👍

https://www.sololearn.com/Discuss/1697994/?ref=app