What are the common characteristics of program control structures?

The common feature of program control structure is that there is only one entrance and one exit; program control structure refers to a series of actions executed in a certain order to solve a certain problem; theory and practice have proven that no matter how complex, The algorithms can be constructed through three basic control structures: sequence, selection, and loop.

The operating environment of this article: Windows 7 system, Dell G3 computer.

The common feature of the three basic control structures of the program is that there is only one entrance and one exit.

Program control method refers to the data transmission method under program control. A program control structure refers to a series of actions performed in a certain sequence to solve a problem. Theory and practice have proven that no matter how complex the algorithm is, it can be constructed through three basic control structures: sequence, selection, and loop. Each structure has only one entrance and exit. A multi-level nested program composed of these three basic structures is called a structured program.

The characteristic of the program is that it starts from an entrance and finally ends with an exit. During this period, the flow of the program can be controlled by sequence, selection and loop. The three structures can write very complex programs, and selections and loops can be nested.

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