Help plz me again )i want to see my mistake(Solved) (TNX)

Question

You sell souvenir kaleidoscopes at a gift shop, and if a customer buys more than one, they get a 10% discount on all of them!
Given the total number of kaleidoscopes that a customer buys, let them know what their total will be. Tax is 7%. All of your kaleidoscopes cost the same amount, 5.00.

Task:
Take the number of kaleidoscopes that a customer buys and output their total cost including tax and any discounts.

Input Format:
An integer value that represents the number of kaleidoscopes that a customer orders.

Output Format:
A number that represents the total purchase price to two decimal places.

Sample Input:
4

Sample Output:
19.26
https://code.sololearn.com/cP56prrRq0hi/?ref=app

Answer 1

I think you schould do a string format like this
{0} is a placeholder for the variable tp
and :f2 to format the output to two decimal places.
Console.WriteLine("{0:f2}",tp);

Answer 2

I think this article will help you.

https://docs.microsoft.com/en-us/dotnet/standard/base-types/composite-formatting

Answer 3

Tnx guys, it works, but how it works? What the f2 means? I didnt learn this yet