1. MATLAB 2
ENGR 2194

2. Saving a Script File Script files must be saved after completion
In our class use Save As to your Z:\ or USB drive
This should be the same as the working directory you specified upon starting MATLAB
SAVE YOUR WORK AS YOU GO!

3. Saving a Script File
The name of the script file is governed by the following rules:
No spaces are allowed
The name cannot start with a numeric
No special characters are allowed (except underscore)
Allowed: Not Allowed:
Prob1a.m Prob 1a.m (blank space)
Prob_1a.m 1aProb.m (can’t start with numeric)
Prob-1a.m (no special characters)

4. Script File Example
Goal: Create a script file that calculates hypotenuse of triangle based on Pythagoras theorem.
Pythagoras theorem: 𝑎 2 + 𝑏 2 = 𝑐 2 𝑎 𝑏 𝑐

5. Script File Example Steps for creating script
Create a script file and name it Pyth.m
Clear the command window
Clear all variables from memory
Display your name and seat number
Declare height of triangle as 3 units
Declare base of triangle as 4 units
Find the hypotenuse of the triangle 4 3 ?

6. Script File Example Print of the script file.
Print of the output (command window).

7. Homework Example Script file to print Command window to print clc
disp(‘Student, Joe’)
disp(‘ENGR 1181, Seat 99’)
disp(‘MAT – Introduction’)
disp(‘Problem 4’)
Prob4a = cos(5*pi … …
Student, Joe
ENGR 1181, Seat 99
MAT – Introduction
Problem 4
prob4a =
0.2846 …

8. What is a Loop ?
A loop allows a group of commands in a program to be repeated.
Each repetition of the loop is called a pass.
Either the number of passes can be fixed.
Or the loop can be terminated after some condition is satisfied.

9. Examples of basic for–end Loops
Output: 1 2 3
for k = 1:3
disp(k)
end

10. Example: Simple While Loop
a=0 while a<10 a=a+1 if (a==5) continue end disp(a) end
Note:
conditional variable is initialized
variable advances each time
one end corresponds to if
one end corresponds to while