Chapter 4: Programming with MATLAB - FET

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Strings ‘ ‘ A string is a variable that contains characters. Strings are useful for creating input prompts and messages and for storing and operating on data such as names and addresses. To create a string variable, enclose the characters in single quotes (’ ’). For example, the string variable name is created as follows: >>name = ’Omar Student’ name = Omar Student 4-21 The following string, number, is not the same as the variable number created by typing number = 123. >>number = ’123’ number = 123 Z.R.K
4-22 Strings and the input Statement The prompt program on the next slide uses the isempty(x) function, which returns a 1 if the array x is empty and 0 otherwise. It also uses the input function, whose syntax is x = input(’prompt’, ’string’) or x = input(’prompt’, ’s’) This function displays the string prompt on the screen, waits for input from the keyboard, and returns the entered value in the string variable x. The function returns an empty matrix if you press the Enter key ( ) <strong>with</strong>out typing anything. 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 and 10: Flowcharts are useful for developin
Page 11 and 12: To locate a runtime errors, try the
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: For example, suppose that y = ln(x)
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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