At the end of this lesson:
You will learn what a Boolean expression is, and how to use them.
You will use If and Else statement to control the sequence of execution.
You will learn how to use And and Or in a Boolean expression.
You will learn how to tell if the user clicked or double clicked.
1. Print and read the lesson.
Follow all instructions as you go along.
(Punch, staple, put in your binder.)
2. Run each of the demos, flowcharts or other materials
from the lesson: maze
3. Write each of the programs in the lesson.
To get the most out of these programs
- Following the instructions, get the program to work.
- Experiment with it: make little changes and see what happens,
make sure you understand it.
- Erase it - now try to write it without looking at your notes!
4. All of the programs from the lesson are in an executable
zip file.
When you click on this link, save the zip file to your disk.
Double click on the EXE file and unzip all of the files to a directory created
for this lesson.
Programs: Maze, Quadrants,
Using the sample programs as a model, write a completely
new program
that uses the same techniques.
- Indent each statement inside a block about 2 spaces.
All of the statements should line up.
- Use good variable names and comments: if you look at the program
in a year,
will you know what the program does?
Programming Exercise:
Using what you learned in this lesson, create an application that:
When the form is resized, draw two lines that divide the screen
into quadrants.
When the mouse moves across the form display the coordinates
of the point using the math coordinates with the intersection
of the 2 lines as (0,0)
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