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Engineering LibreTexts

7.1: Psuedocode Examples for Functions

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    No standard for pseudocode syntax exists. However, there are some commonly followed conventions to help make pseudocode written by one programmer easily understood by another programmer. The following describes a method for using pseudocode for functions that would be understood by programmers. Five concepts are:

    • Use a beginning phrase word to start the function
    • Use a communication phrase word to identify the items being passed into the function
    • Use indentation to show the action part of the function
    • Use a communication phrase word to identify the items being passed out of the function
    • Use an ending phrase word to end the function
    • Use a calling phrase word to direct your program to use a fucntion

    The following is a suggested outline of function phrase words:

    Item/Purpose Starting Phrase Word Ending Phrase Word
    Beginning Function N/A
    Communication In Pass In: None
    Action N/A N/A
    Communication Out Pass Out: none
    Ending N/A Endfunction
    Calling a Function Call: none


    Here are some examples showing functions defined in pseudocode using our conventions as described above.

    Pseudocode: Function with no parameter
    Function clear monitor
      Pass In: nothing
      Direct the operating system to clear the monitor
      Pass Out: nothing
    Pseudocode: Function with parameter passing
    Function delay program so you can see the monitor
      Pass In: integer representing tenths of a second
      Using the operating system delay the program
      Pass Out: nothing
    Psuedocode: Function main calling the clear monitor function
    Function main
      Pass In: nothing
      Doing some lines of code
      Call: clear monitor
      Doing some lines of code
      Pass Out: value zero to the operating system


    Phrase Word
    Words used to make pseudocode logic clear to any reader.
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