Exercise $2\mathrm{.}3\mathrm{.}3||$ Arithmetic Operators

Get a number from the user and assign it to a variable called user$\_$number.

a$.$ Multiply the user number by $2$ and store it in a variable called double$\_$user$\_$number $.$

b$.$ Divide the user number by $2$ and store it in a variable called half$\_$user$\_$number.

c$.$ Add $10$ to the user number and store it back to the user$\_$number.

d$.$ Show all the operation results along a descriptive text to the user.