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Build app for icecream parlor using file handling to record daily sales. Icecream parlor offers 10 flavours icecreams. Each has different price per scoop. Different flavours rates, description and rate/scoop are stored in file named flavors.txt. Also for each flavor sugarfree version also exists. It has same flavor and description but rate is 20% more than original per scoop price . There is no separate file or record for sugar free types. Build an interface by yourself.

A sale is done by selecting flavor from the list. Customer specifies the number of scoops & bill is calculated. If sugar free checkbox is selected then price is recalculated as mentioned above and bill is adjusted accordingly. Upon finishing a sale, sale record is saved in file named sales.txt. This file will contain record of all the sales of the day. Also create a separate file named total.txt. This file will contain just one number which is grand total of all the sales done

Write a shell script using Nested for loops of your own and explain each statement of that script. Explanation

Write a shell script to determine if an input number is a palindrome or not.

Write a shell script that, given a file name as the argument will write the even numbered line to a file with name even file and odd numbered lines in a text file called odd file.

Write a menu driven shell script using the select statement to print calories for food items such as pizza, burger, Salad, Pasta etc

Given three floating-point numbers x, y, and z, output x to the power of z, x to the power of (y to the power of z), the absolute value of y, and the square root of (xy to the power of z).

Write a program to input side of a square and find the area and perimeter of a square.