In programming, four primary flowcharting symbols commonly used are:
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Oval (Terminator): Represents the start and end points of a flowchart. It typically contains the words "Start" or "End."
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Rectangle (Process): Indicates a process or action step. This symbol represents any operation, such as calculations, assignments, or other activities.
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Diamond (Decision): Represents a decision point in the flowchart, typically involving a Yes/No or True/False question that directs the flow based on the outcome.
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Parallelogram (Input/Output): Used to denote input to or output from a process, such as receiving data from a user or displaying results.
These symbols help in visually outlining the logic and flow of algorithms or processes in programming.