National 5 Assessment.

1.1
Line 1 creates the total cost variable which will be used to display the total overall cost of all of the books that you are buying, with the discount and voucher code price also taken off them.
Line 2 creates the amountofboks variable which is a counter used in the expression to find the total cost of everything.
Line 3 creates the variable priceofbook which is also used in the expression to calculate the total cost of the books.
Line 4 creates a string type variable called voucher which is used to compare if the users input of the voucher code is the same as the actual voucher code.
Line 5 asks the user for the amount of books that they are ordering, and the input will assign why the entered to the ‘amountofbooks’ …show more content…
Line 11 adds the total cost line to the listbox.
Line 12, 13, 14, 15, 16, and 17 all use the ‘if’ comparison function to decide if the user is able to use a voucher or not, and what % of discount it will display in the listbox.
Line 18 is the final line of code uses concatenation, which means that it will attach a string and a variable together and it will add that line to the listbox, it also uses the “n” to round the variable to two decimal places.
1.2
The purpose of a range is to control the minimum and maximum amount of data that you can use in variable, or possibly the bounds of an array, upper and lower.
1.3
Variables in programmed are a named storage location which are stored in the RAM, the Random Access Memory. There are multiple types of variables: Integer, Double, Array, Float, Real, Boolean, Long, Short, and a string. A double can be used to store decimal points. An array is a set of values. An integer can store a whole number. A Boolean stores a yes or no, a long stores up to 9223372036854775807, or