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:
var n,s,i:integer;
var a:array[0.9] of integer;
begin
a[0]:=2;
a[1]:=4;
a[2]:=1;
a[3]:=8;
a[4]:=2;
a[5]:=6;
a[6]:=3;
a[7]:=2;
a[8]:=2;
a[9]:=1;
n:=10;
s:=0;
for i:=1 to n-1 do begin
if a[i-1]>2*a[i] then begin
a[i]:=2*a[i];
s := s+ a[i];
end;
end;
writeln(s);
end.
⇒s = 6.