Chapter 4: Programming with MATLAB - FET

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Finding Bugs Debugging a program is the process of finding and removing the “bugs,” or errors, in a program. Such errors usually fall into one of the following categories. 1. Syntax errors such as omitting a parenthesis or comma, or spelling a command name incorrectly. <strong>MATLAB</strong> usually detects the more obvious errors and displays a message describing the error and its location. 2. Errors due to an incorrect mathematical procedure. These are called runtime errors. They do not necessarily occur every time the program is executed; their occurrence often depends on the particular input data. A common example is division by zero. 4-9 Z.R.K
To locate a runtime errors, try the following: 1. Always test your program <strong>with</strong> a simple version of the problem, whose answers can be checked by hand calculations. 2. Display any intermediate calculations by removing semicolons at the end of statements. 3. To test user-defined functions, try commenting out the function line and running the file as a script. 4. Use the debugging features of the Editor/Debugger, which is discussed in Section 4.7. 4-10 Z.R.K
Page 1 and 2: UNIVERSITY OF JORDAN Faculty of Eng
Page 3 and 4: 4-3 Components of an Algorithm •
Page 5 and 6: 4-5 Steps for developing a computer
Page 7 and 8: Effective documentation can be acco
Page 9: Flowcharts are useful for developin
Page 13 and 14: Order of precedence for operator ty
Page 15 and 16: Logical function ischar(A) isempty(
Page 17 and 18: The if and else Statement The if st
Page 19 and 20: Instead, consider what happens if w
Page 21 and 22: For example, suppose that y = ln(x)
Page 23 and 24: 4-22 Strings and the input Statemen
Page 25 and 26: for Loops A simple example of a for
Page 27 and 28: The continue Statement The followin
Page 29 and 30: while Loops The while loop is used
Page 31 and 32: 4-30 A simple example of a while lo
Page 33 and 34: The switch Structure The switch str
Page 35 and 36: The Editor/Debugger containing two
Page 37: End of Chapter 4 Problems Page 241

Chapter 4: Programming with MATLAB - FET

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