Programming challenge 2.2

Using visual studios community 2019 in C#,

Lynn's pizza Restaurant also sells cookies. One cookie costs 12 cents. A dozen cookies cost $1.20. Any number of cookies less than a dozen cost 12 cents each. For example, 10 cookies cost $1.20, 11 cookies cost $1.32, and 12 cost $1.20, 13 would cost $1.32, 30 cookies will cost $3.12. Write a program to ask the user for the number of cookies, then display the total cost.