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:
program expression;
var
x, y: real;
begin
read(x);
y := power(x, 4) — 3 * power(x, 3) + 5 * x — 6;
write(y);
end.
Объяснение:
program expression; // Название программы
var
x, y: real; // Две переменные являются вещественными (требуется для power)
begin // Начало программы
read(x); // Вводим число с клавиатуры
y := power(x, 4) — 3 * power(x, 3) + 5 * x — 6; // Само выражение
power(число, которое нужно возвести в степень | сама степень)
power(x, 4)
x — число
4 — степень
write(y); // Выводим ответ
end. // Начало программы
##
var x := ReadReal;
var y := -6 + x * (5 + x * (0 + x * (-3 + x))); // схема Горнера
Print(y)