Introduction to Programming-Guidelines for drawing Flowchart

Posted on 22 June 2014 at 04:59

Different guidelines for drawing a flowchart are as follows:

All necessary requirements should be listed in a logical order while drawing a flowchart.
Flowchart should be clear, neat and easy to follow.
The usual direction of flowchart is from top to bottom or left to right.

Only one line should come out from process symbol.

Only one flow line must enter a decision symbol. But two flow lines, one for each possible answer, must come out of decision symbol.

Only one flow line is used with terminal symbol.

The start and end of flowchart must be logical.
The comments should be written in remarks symbol.

The connector should be used to reduce the number of flow lines if the flowchart becomes complex.
It is useful to ensure the validity of flowchart by testing it with simple data.

Limitations of Flowchart

The limitations of flowchart are as follows:

It is difficult to draw flowcharts for complex problems.
The flowchart has to be redesigned if any change is required.

Example 1

The following flowchart represents the steps for adding two numbers.

Example 2

The following flowchart represents the steps of an algorithm that inputs marks of a student. If marks are 40 or more, it displays “Pass”. Otherwise it displays “Fail”.