In order to write computer programming without any logical error, it is recommended programmers prepare a rough writing showing the steps involved in the program. This is called an algorithm. An algorithm presents step-by-step instruction required to solve any problem. These steps can be shown diagrammatical using a flowchart.
Flowchart is a symbolic or diagrammatic representation of an algorithm. It uses several geometrical figures to represent the operations and arrows to show the direction of flow. Programmers often use it as a program-planning tool to solve a problem. It makes use of symbols which are connected among them to indicate the flow of information and processing. Flowchart are very helpful in writing program and explaining program to others.
Common Symbols in Flowcharts:
Start/Stop (Terminal): Represents the beginning and the end of the flowchart.
Input/Output: Represents the values to be given by the user and the results to be displayed.
Processing: Represents the arithmetic operation to compute a value.
Checking/Decision making: Represents the logical checking to decide the flow sequence.
Preparation: As the names states, any process step that is a Preparation process flow step, such as a set-up operation.
Connector: Represents the Continuity of the flowchart in another place / page.
Arrows: Represents direction of flow.
Examples of flowcharts:
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