Guidelines For Writing Algorithms,Pseudocode And Flowcharts

Here are a few guidelines that will help you in writing an efficient algorithm:

• An expected output should be decided by the programmer before writing an algorithm.
• Each step in an algorithm should be written clearly,stating each task to be performed.
• To be sure that the algorithm produces the expected output,it should be checked using sample values.

And a couple too for writing pseudocode,

• Statements that are related should be combined to avoid writing a lengthy pseudocode. For example,

          display "Enter first number"
          accept number1
          display "Enter Second number"
          accept number2

The statements above make the for a lengthy pseudocode,it can be shortened by combining the statements. For example:
         display "Enter two numbers"
         accept number1,number2

•  The pseudocode should be aligned properly for a clear understanding of the steps carried out.

Here are also rules recommended by the American National Standard Institute (ANSI) that are to be followed when drawing a flowchart.

• The entire logic of a flowchart should be represented using standard symbols.
• The flowchart should be clear,precise and easy to follow.
• The flowchart should have only one start point and one end point.
• The steps in a flow chart should follow top-to-bottom or left-to-right approach.
• All necessary inputs should be listed in logical order.
• The start and stop symbols should have only a single flow line.
• The input,process,output and display symbols should have at least two flow line connecting to the previous symbol and to the next symbol.
• The decision symbol should have one flow line flowing into it and two flow lines flowing out of it for each possible decision.
• Flow charts should use page connectors if they extend over multiple pages.
• It is useful to text the logic of the flowchart by texting the flowchart using some sample values.........