Tutorials

# Flowchart

A flowchart is a diagrammatic representation of a problem-solving process (algorithm) in  which steps are laid out in logical order using geometrical symbols.

FLOWCHART SYMBOLS

In the flowchart technique, each step is represented by drawing specific geometrical symbols.

 Symbol Symbol Name Purpose Oval Start/Stop This is used at the beginning and at the end of a flowchart to indicate start and end of the program or the algorithm, respectively. Rectangle Process This is used to indicate processes or actions, for example, ’add two numbers’. Parallelogram Input/ Output This is used to indicate input and output of a program, for example, ‘read a number’ , ‘print a name’ , etc. Diamond Decision This is used in a situation which demands one to choose either ‘Yes’ or ‘No’. Arrow line Flow Lines These lines are used to show the flow of logic in a flowchart.

FEATURES OF A FLOWCHART

You should keep in mind the following points while creating a flowchart.

• A flowchart should have only one start and one stop symbol.
• The general direction of flow in a flowchart is from top to bottom or from left to right.
• Arrow heads are used to indicate the flow of information or sequences of steps.
• The arrow lines should not cross each other.

When a flowchart occupies more than one page, the off-page connectors are used for joining the parts on the different pages. The parts of a flowchart contained within one page are joined by the on-page connectors. The different parts must by referenced by the same numbers say, 1,2,3, etc. or by the same alphabetic characters A,B,C, etc. usually the on-page connectors are referenced by numbers, and the off-page connectors by letters.