Quiz: Structures and Unions

5 questionsNo time limitPass: 60%+10 XP on first pass

Group related data with struct, use arrays of structures and pointers to structures (->), see struct padding vs union memory sharing in a picture, plus enum and typedef.

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Question 1
If p is a pointer to a struct, how do you access its member age?
p.agep->age*p.agep::age
Question 2
What is the size of a union with members char, int and double (double = 8 bytes)?
131681

Question 3

What does this print?

#include <stdio.h>
enum Color { RED, GREEN = 5, BLUE };
int main(void) {
    printf("%d %d %d", RED, GREEN, BLUE);
    return 0;
}

0 1 20 5 61 5 60 5 2

Question 4
Why can sizeof(struct) be bigger than the sum of its members?
Because of the null characterBecause of padding for alignmentBecause structs store their nameIt can't be bigger
Question 5
In a union, how many members hold a valid value at the same time?
OneAll of themTwoNone