echo "Enter a number: "
read num
i=1
sum=0
while [ $i -le $num ]
do
sum=`expr $sum + $i`
i=`expr $i + 1`
done
echo "The sum of first $num numbers is: $sum"
-------------------------------------------------------------------------------------------------
->OUTPUT:
---------
Enter a number:
5
The sum of first 5 numbers is: 15
*************************************************************************************************
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