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!
===== PascalABC.NET =====
function L(x1, y1, x2, y2: real) := Sqrt(Sqr(x2 — x1) + Sqr(y2 — y1));
function r(xA, yA, xB, yB, xC, yC: real): real;
begin
var c := L(xA, yA, xB, yB);
var a := L(xB, yB, xC, yC);
var b := L(xA, yA, xC, yC);
var p := (a + b + c) / 2;
Result := Sqrt((p — a) * (p — b) * (p — c) / p)
end;
begin
var xA, yA, xB, yB, xC, yC: real;
loop 2 do
begin
Writeln(‘Введите координаты x и y каждой вершины треугольника’);
Read(xA, yA, xB, yB, xC, yC);
Writeln(‘Радиус вписанной окружности равен ‘, r(xA, yA, xB, yB, xC, yC))
end
end.