This is Assembly code for a switch statement, code is there you have to$$add the comments after each assembly code after # sign $.$ like$$

movzbl$\%$al$,\%$eax$$ # move $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_```$

char letter$\_$grade;

int gpa;

switch $($letter$\_$grade$)\{$

case $\text{'}$A$\text{'}$ : gpa $=4$;

break;

case $\text{'}$B$\text{'}$ : gpa $=3$;

break;

case $\text{'}$C$\text{'}$: gpa $=2$;

break;

case $\text{'}$D$\text{'}$ : gpa $=1$;

break;

case $\text{'}$F$\text{'}$: gpa $=0$;

break;

default: printf$("$Invalid letter grade

$"$;

$\}$

character ASCII code Int value

$\text{'}$A$\text{'}0100000165$

$\text{'}$B$\text{'}0100001066$

$\text{'}$C$\text{'}0100001167$

$\text{'}$D$\text{'}0100010068$

$\text{'}$F$\text{'}0100011070$

$```$