In the lecture, we discussed if$-$else statement. Is the following possible? Please give reason for your answer

if $($condition$)$

$\{$

if $($condition$)$

$\{$

statements;

$\}$

else

$\{$

statements;

$\}$

$\}$

else

$\{$

statements;

$\}$

Question $2$:

Is the following possible? Please give reason for your answer

if $($condition $1)$

statement $1$;

else if $($condition $2)$

statement $2$;

else if $($condition $3)$

statement $3$;