1. Review Dry Run A Little More Math Fix it Online time
Intro to Programming
Review
Dry Run
A Little More Math
Fix it
Online time

2. Learning Objectives
Be able to Dry run a program that includes math operations and output
Understand how to translate Math equations into Pascal.
Be able to fix a program written poorly.
Be able to develop a program in Pascal.

3. Which are valid variable names? Which are good variable names?Yo
3daysleft
Summer time X Q
Top Score
Address
Begin
Writeln
End X1
X^2
What?
Number from 1 to 13 and write valid/invalid and good/bad.

4. Dry run 1 (What do you think the following program does?)
{Mr. Smith's Sample Program}
{Dry Run #2}
{ }
program DryRunTest;
uses
crt;
var
a,b,c:integer;
begin
clrscr;
a:= 20;
b:= 16;
c:= a+b;
writeln(a, b, c);
b:= c – 2*(a+b) -6;
a:= c + b;
end.
Dry run 1 (What do you think the following program does?)

5. Math Math Pascal Code Example + Ans:= first+second; -
Ans:= second – first; x *
Ans := first * second; ÷ /
Ans := first / second ()
Ans := (first + 2)/second; π PI
Ans := PI; 52
sqr
Ans := sqr(first); √
Sqrt()
Ans:= sqrt(first);

6. You turn: What is the result of the following?
Expression
Answer
Type
2+ 12
5*(8-15)
5 + 6*3
6 + 4/2 – 8
(6+4)/2 – 8
(6+4)/(2-8)
Sqrt(9)
Sqrt(4*4 + 9)
Sqrt(sqr(3) + sqr(4))

7. Fix the following Fix5-20.pas in the assignments folder
Open it in Pascal, save it to your documents then fix it.
Fix the following
prograhm Fix it 1
{Finding the average of two numbers)
Number1, number 2, The average:integers.
start
writeln("Please enter two numbers)
readline(17, 13)
number1+number2/2 = average
Show The average of 17 and 13 is average
stop

8. Write a program for one of the following
Extension: Look up If..then to check if the sides entered actually do make a triangle.