Write a program that lets you know if you can have a key or not, based on your role at the school.
 First ask for the user’s role at the school. They can be a student, administrator, or a teacher. (And remember that capitalization is important! ‘Student’ is not the same as ‘student’.)
 Example 1: Administrator or Teacher
 For example, if this was the input:
 Are you an administrator, teacher, or student?: teacher
 This should be the output:
 Administrators and teachers get keys!
 Example 2: Student
 And if this was the input:
 Are you an administrator, teacher, or student?: student
 This should be the output:
 Students do not get keys!
 (Note: You should also be able to handle a situation where the user enters a value other than administrator, teacher or student and tell them they must be one of the three choices!)
 Example 3: Other
 If they input anything else:
 Are you an administrator, teacher, or student?: secretary
 This should be the output:
 You can only be an administrator, teacher, or student!
   
Ответ:
B = 28 после всех вычислений. Идёт сравнение: если модуль числа A < B, то цикл повторяется и от A отнимается 2. После первого цикла A станет -2, но, т.к. с B мы сравниваем модуль A, то 2 < 27. И так далее 14 раз, пока А не станет = -28, условие выполнится и B станет = |-28| = 28. И программа завершится.
В виде кода это выглядит так:
static void Main(string[] args)
{
int a = 0, b = 27;
while(Math.Abs(a) < b)
{
a = a — 2;
}
b = Math.Abs(a);
Console.WriteLine(«Число B = » + b);
Console.ReadKey();
}
Объяснение: