Structure of flow charts
- 2. What is flow chart Flow chart is the combination of two words flow and chart. A chart consist of different symbols to display information about any program. Flow indicates the direction of the processing that takes place in the algorithm.
- 3. • In this presentation we will discuss the different symbols of the flow chart that is used to display the information about any program.
- 4. Input and output • Parallelogram is used to represent an input or output step. • Input is used to get the input from the user. • Out put is used to display message or to display a value to the user. Parallelogram
- 5. Process • Rectangle symbol is used to represent a process step. • A process may be a complex calculation or simply an assignment statement. Rectangle
- 6. Selection • Diamond symbol is used to represent a selection step. • A condition is given in the diamond. • A flow of control from diamond may go in two directions i.e. one direction when the condition is true and another direction when the condition is false. Diamond
- 7. Start/ End • Oval symbol is used to represent the start or the end of the flow chart. oval
- 8. Flow Line • Arrow symbols is used to represent the direction of flow in the flow chart. There are four types of flow lines.
- 9. Connector • Circle symbol is used to combine the different flow lines. Circle
- 10. Function call • Rectangle symbol with the double lines on left and right side is used to call a function. The name of the function with the parameters are written inside the function. Function()
- 11. Next In the next presentation we will see what are the guidelines to draw a flow chart using these symbols.