$1.(20$ points$)$ What is the output of the following C program? If you believe there are compile errors or potential runtime errors, you should point out all the errors. You should be able to tell the answer without compiling or running it$.$

#include

int main$()$

$\{$

int x$=4$;

int $*$q$=$&x;

$(*$q$)+=1$; x$+=2$;

int y$=$x$*((*$q$)-1)$;

printf$("$y is $\%$d

$",$y$)$;

return $0$;

$\}$

$2.(20$ points$)$ What is the output of the following C program? If you believe there are compile errors or potential runtime errors, you should point out all the errors. You should be able to tell the answer without compiling or running it$.$

#include

int main$()$

$\{$

int x$=6$;

int $*$q$=$&x$,$ &qq$=*$x;

$(*$q$)-=2$; $(*$qq$)+=3$;

int y$=(*$qq$)*((*$q$)-2)$;

printf$("$y is $\%$d

$",$y$)$;

return $0$;

$\}$

$3.(20$ points$)$ What is the output of the following C program? If you believe there are compile errors or potential runtime errors, you should point out all the errors. You should be able to tell the answer without compiling or running it$.$

#include

int main$()$

$\{$

int x$=23,$y$=8$;

int q$=$x$/$y$,$r$=$x$\%$y$,$r$1=($x