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    Pseudo Code

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    kallady
    The document discusses the technique of using pseudocode to plan algorithms by writing programs in an informal language that is similar to English rather than a formal programming language, provides examples of pseudocode for selection and repetition structures, and compares pseudocode to flowcharts which use graphical representations but have no standard rules like pseudocode.

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    Pseudo Code

    Uploaded by

    kallady
    276 views17 pages
    The document discusses the technique of using pseudocode to plan algorithms by writing programs in an informal language that is similar to English rather than a formal programming language, provides examples of pseudocode for selection and repetition structures, and compares pseudocode to flowcharts which use graphical representations but have no standard rules like pseudocode.

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    Pseudo Code - java

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    The document discusses the technique of using pseudocode to plan algorithms by writing programs in an informal language that is similar to English rather than a formal programming language, provides examples of pseudocode for selection and repetition structures, and compares pseudocode to flowcharts which use graphical representations but have no standard rules like pseudocode.

    Copyright:

    © All Rights Reserved
    Download as PPT, PDF, TXT or read online from Scribd
    Download as ppt, pdf, or txt
    276 views17 pages

    Pseudo Code

    Uploaded by

    kallady
    The document discusses the technique of using pseudocode to plan algorithms by writing programs in an informal language that is similar to English rather than a formal programming language, provides examples of pseudocode for selection and repetition structures, and compares pseudocode to flowcharts which use graphical representations but have no standard rules like pseudocode.

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    © All Rights Reserved
    Download as PPT, PDF, TXT or read online from Scribd
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    You are on page 1of 17

    C Programming Technique – Firdaus-Harun.

    com

    PSEUDOCODE
    Agenda
     Intro to Pseudocode
     Pseudocode vs Flowchart
     Technique – Write pseudocode
     Examples
    What’s Pseudocode ?
     Artificial and Informal language
     Helps programmers to plan an algorithm
     Similar to everyday English
     Not an actual programming language
    E.g : Pseudocode
    Read A, B
    Calculate C = A*B
    Display C
    Stop
    Technique
     Do not write Start in every pseudocode
     Parallelogram – Read / Get OR Display /
    Print
     Rectangle – Specify the actions
    ◦ E.g:
     Calculate A = B + C OR A equals to B plus C
     Average = total / count
     Final price equals price of item plus sales tax
     Diamond – [Next »]
    Technique (..Cont.)
     Diamond
    ◦ Selection – IF , IF / ELSE and IF / ELSE IF
    IF A is less than B
    BIG = B
    SMALL = A
    ELSE
    BIG = A
    SMALL = B
    ◦ Repetition – WHILE / DO/WHILE / FOR [Next
    example]
    Comparative Between Flowchart vs
    Pseudocode
     Flowchart
    ◦ A graphical way of writing pseudocode
    ◦ Rounded rectangle – terminal
    ◦ Parallelogram – input / output
    ◦ Rectangle – actions
    ◦ Diamonds – decision / conditional
    ◦ Circles – connector
    E.g : Flowchart
    Start Terminal.
    Start Program start
    here

    Read A Input.
    Read B Enter values for
    A and B

    Calculate Resut
    C=A*B Process

    Display the
    Result C Output

    Stop Terminal
    Stop Program end
    here
    Comparative Between Flowchart vs
    Pseudocode (..Cont.)
     Pseudocode
    ◦ No syntax rule – Independent from any
    programming language
    ◦ Write in an ordinary language
    ◦ Uses a structure resembling computer
    structure
    ◦ No connector between pages
    E.g : Pseudocode
    Read A, B
    Calculate C = A*B
    Display C
    Stop
    E.g : Pseudocode
    Read A, B – Input
    Calculate C = A*B - Action
    Display C - Output
    Stop - Terminal
    Example 2 (Selection)
    Read A, B
    IF A is less than B
    BIG = B
    SMALL = A
    ELSE
    BIG = A
    SMALL = B
    Write / Display BIG, SMALL
    Stop
    Example 2 (Selection)
    Read A, B - Input
    IF A is less than B - Selection
    BIG = B - Action
    SMALL = A - Action
    ELSE - Selection
    BIG = A - Action
    SMALL = B - Action
    Write / Display BIG, SMALL - Output
    Stop - Terminal
    Example 3 (Repetition)
    Set count to zero
    Set total to zero
    Read number

    WHILE ( not end-of-data )


    increment count by 1
    total = total + number
    read number

    IF ( count > 0 ) then


    average = total / count
    Display average
    Stop
    Advantages
     Converting a pseudocode to a
    programming language is much more
    easier than converting a flowchart.
     As compared to flowchart, it is easier to
    modify a pseudocode of a program logic
    when program modifications are
    necessary.
    Limitations
     In the cases of pseudocode, a graphic
    representation of program logic is not
    available.
     There are no standard rules to follow for
    using a pseudocode.
    ◦ Different programmers use their own style of
    writing pseudocode; and hence,
    ◦ Communication problem occurs due to lack
    of standardization.
    Class Tutorial
     *Using previous Flowchart tutorial.
     Write a pseudocode to calculate Area
    and Perimeter of a trapezoid.
     Write an algorithm to set a Median for
    given number : ………………………..

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