Pseudocode

Pseudocode

• Pseudocode is an informal program description that does not contain code syntax or underlying technology considerations. Pseudocode summarizes a program’s steps (or flow) but excludes underlying details.

• The System designer or Software designer is make pseudocode for a particular problem.

• Pseudocode cannot be compiled nor executed, and there are no real formatting or syntax rules. It is simply one step - an important one - in producing the final code

• There are some alternatives to Pseudocode. Some of them are Flowcharts, drakon-charts and Unified Modified Language (UML) charts. They will serve the purpose but they comparatively require more resources

Advantages of Pseudocode

• Anybody can understand the pseudocode, what will that do.

• There is no need to know the programming language.

• It helps to understand the solution of the problem simply.

Programming Constructs

1. Sequence

1. Selectors

1. Iteration

There are some words are use to input data

• Input

• Enter

• Read

• Get

There are some words are use to output data

• Output

• Display

• Show

• Print

Condition checking

IF (condition) then
      <statements to do>
else
      <statements to do>
End IF

Iteration in pseudocode

While(condition) then
        <statements to do>
        increment
End While

Simple pseudocode examples...

Example for sequence programme

• Add 2 numbers and find the average of that numbers

Begin
    Input a number as num1
    Input a number as num2
    total=num1+num2
    average=total/2
    print total
    print average
End

Example for selection programme

• Fine the user entered number  is odd or even

Begin

    Input a number as num

    if(num/2=0) then

        Display num is a even number

    else

        Display num is a odd number

Example for iteration programme

• Find all multiples of 5 between 1 and 100

Begin

num=5

While (num <=100) then

Display num

num=num+5

End While

End