1. How can you model playing rock-paper-scissors?
Computer Science
How can you model playing rock-paper-scissors?

2. Fix the following program just The Factorials; variables
number, answer:integer;
Start-O-Matic
writeln('Please enter a positive integer.');
readln(nummy);
factorial := 0;
repeat
factorial := nummy * nummy;
nummy := nummy -1;
until nummy := answer;
writeln(' The factorial = nummy);
the-bitter-end.
Fix10-17Factorial

3. How do you model playing Rock-paper-scissors?
What options do you have?
How can you model each of these options?

4. Case statement
When
When you have 3 or more choices
Semantics

5. Expression must be ordinal (integer or char)
Case Syntax
case expression of
: WriteLn('Int is 5');
7..12,15 : WriteLn('Between or 15');
else
begin
WriteLn('Undefined.');
writeln(‘Try again later’);
end; {Of this choice}
end;{Of the case.}
Constants: if the expression resulted in a char, you would need to have character constants (Like ‘A’, ‘B’, …)
Note case has no begin, but does have an end!!!

6. program CaseExample;
var
Choice:integer;
begin
writeln(‘Choose one of the following’);
writeln(‘ 1 - Titan Burger’);
writeln(‘ 2 - SwordFish Sandwich’);
writeln(‘ 3 - Chicken Nuggets’);
readln(choice);
case choice of
1:begin
writeln(‘Titan Burger $3.00’);
writeln(‘Yum Yum’);
end;
2: writeln(‘Swordfish $5.00’);
3: begin
writeln(‘No Chicken’);
writeln(‘We’’re very sorry’);
end; {Of the case statement}
end.

7. Dry run the following program casecheck; var counter:integer; begin
for counter:= 1 to 9 do
case counter MOD 5 of
0:write('often ');
1:write('What ');
2,4:write('is ');
3:write('not ');
end; {Of the case}
end; {Of the for loop}
writeln;
end.

8. Program options Planet weight Quadrant check
Write a program that lets the user find their weight on any of the following planets/stars.
Sun(27.94)
Moon (0.17)
Saturn (1.15)
Mercury (0.37)
Venus(0.88)
Jupiter (2.64)
Rock-paper-scissors against the computer (This one is tricky!)
Quadrant check
Input: The measure of an angle in degrees.
Output: Which quadrant the angle falls into.
0<First Quadrant<90
90<Second <180
180<Third<270
270<Fourth<360
The series of quadrants starts all over again at 360.
How do you handle when the angle matches an axis?