$(1)$

bool OK$=$false;

int $w=10$;

while $)$

$\{$

$w=w-3$;

cout $,$ num $=5$;

char $,$ let $=\text{'}$F$\text{'}$ ;

if $(\text{'}$B$\text{'}$ let $)\{$

$--$num;

cout$$"Number is $"$ num $$ endl;

$\}$

switch $($ let $)\{$

case $\text{'}$F$\text{'}$:

cout$$"Outstanding";

break;

case $\text{'}$M$\text{'}$:

default:

cout$$"Not impressive";

$\}$

$(3)$

int $m1,m2$;

int Array $[6]=\{5,8,10,13,2,2\}$;

for $($int $y=1$;$y5$;$y+=2)$

$\{$

cout$$ Array$[$y$]<mi\; id="EditorElement\_11311">)</mi>$

cout endl;

else

cout endl;

$\{)$

cout endl;

else

cout endl;

$\{$