Calculating Your GPA (BASH script) For this script we are going to build a small

Question

Calculating Your GPA (BASH script)

For this script we are going to build a small tool that will take in an x number of grade points and at the end spit out our average grade points and grade letter. For this script you will need

Name This Script: myGPA

To use a while loop since this loop will run for an x amount of time

Continues to prompt the user to enter their grade points

Stops prompting a user when the user enters 99. Use a ‘break’ to exit the loop

DO NOT INCLUDE THE NUMBER 99 IN YOUR CALCULATIONS

Use the ‘bc’ command since we are dealing with decimals

At the end spit out the average GPA along with the Grade Letter.

Equation: Add Up All The Numbers and then divide by the total numbers inputted (IGNORE THE NUMBER 99)

Use this chart to determine which grade letter to show

To compare floating point types (real numbers): while (( $(echo "$grade != 99" | bc ) ))

To add F.P. Type: sum=$(echo "scale=2;($sum+$grade)" | bc)

Grade Points

Grade Letter

4.00 and up

A

3.00 - 3.99

B

2.00 - 2.99

C

1.00 - 1.99

D

0.99 and below

F

Grade Points

Grade Letter

4.00 and up

A

3.00 - 3.99

B

2.00 - 2.99

C

1.00 - 1.99

D

0.99 and below

F

Explanation / Answer

code:

# Hello World Program in Bash Shell

i=0

startTime=`date +%s`
timeSpan=10
endTime=timeSpan+startTime # fix the start time end time
count=0
sum=0
while (( `date +%s` < endTime )) ; do
echo "enter grade"
read grade
if [ $grade == 99 ]; then
break
fi
#echo $grade
sum=$(echo "scale=2;($sum+$grade)" | bc)
count=$(echo "${count} + 1" | bc)
#echo $sum
done

echo $sum

avg=$(echo "${sum} / ${count}" | bc)

echo "$avg"

if [ $avg -ge 4 ]; then
echo "A"
elif [ $avg -ge 3 ]; then
echo "B"
elif [ $avg -ge 2 ]; then
echo "C"
elif [ $avg -ge 1 ]; then
echo "D"
else
echo "F"
fi

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.