Grade Determination

Algorithm
Step 1 : Start
Step 2 : Read mark
Step 3 : If mark > 90 then
Print "S grade"
Step 3.1 : else if mark > 80 then
Print "A grade"
Step 3.2 : else if mark > 70 then
Print "B grade"
Step 3.3 : else if mark > 60 then
Print "C grade"
Step 3.4 : else if mark > 55 then
Print "D grade"
Step 3.5 : else if mark 􀁴 50 then
Print "E grade"
Step 3.6 : else
Print "U grade"
Step 4 : Stop

Program (grade.sh)
echo -n "Enter the mark : "
read mark
if [ $mark -gt 90 ]
then
echo "S Grade"
elif [ $mark -gt 80 ]
then
echo "A Grade"
elif [ $mark -gt 70 ]
then
echo "B Grade"
elif [ $mark -gt 60 ]
then

echo "C Grade"
elif [ $mark -gt 55 ]
then
echo "D Grade"
elif [ $mark -ge 50 ]
then
echo "E Grade"
else
echo "U Grade"
fi

Output
[vijai@localhost decision]$ sh grade.sh
Enter the mark : 65
C Grade