$1.(1$ point$)$ In the following declarations, the x and y structures have members named x and y :

$```$

struct $\{$ int x$,$ y; $\}$ x;

struct $\{$ int x$,$ y;$\}$ y;

$```$

Are these declarations legal on an individual basis? Could both declarations appear as shown in a program? Justify your answer.

$```$

$2.(1$ point$)$ struct $\{$

double a;

union $\{$

char b$[4]$;

double c;

int d;

$\}$ e;

char f$[4]$;

$\}$ s;

$```$

If char values occupy one byte, int values occupy four bytes, and double values occupy eight bytes, how much space will a C compiler allocate for s$?$ Justify. $($Assume that the compiler leaves no "holes" between members.$)$ Hint: consider the memory alignment requirement for structure$/$union$.$

$3.(1$ point$)$ union $\backslash \{$ double a;

struct $\backslash \{$

char b$[4]$;

double c;

Generated on $11/21/202422$:$05$:$12$ EST

page $1$ of $3$

$```$

int d;

$\}$ e;

char f$[4]$;

$\}$ u;

$```$

If char values occupy one byte, int values occupy four bytes, and double values occupy eight bytes, how much space will a C compiler allocate for u$?$ Justify. $($Assume that the compiler leaves no "holes" between members.$)$ Hint: consider the memory alignment requirement for structure$/$union$.$