Initializing a pointer in struct in at minimum lines

I'm currently new to C programming, and appreciate for any tip.

Is there a shorter way to initialize struct pointers in C without removing the pointer tags? Thanks~

typedef struct {
    int x, y, z;
} Point3;

typedef struct {
    Point3 *pos, *direction;
} Vector;

int main() {
    Vector *p;
    p = malloc(sizeof(Vector));
    p->pos = malloc(sizeof(Point3));
    p->direction = malloc(sizeof(Point3));
    return 0;
}