What does the basic structure required by a structured program not include?

The basic structure required by structured programs does not include "GOTO jumps". Structured programming is the basic principle for detailed design focusing on module function and process design. It has three basic structures: sequential structure, branch structure and loop structure, excluding goto jumps; goto jumps are only for branch structures. One, and also a keyword. The goto statement is usually used in conjunction with conditional statements and can be used to implement conditional transfers, form loops, and jump out of loop bodies.

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

Structured programming is the basic principle for detailed design focusing on module function and process design. Structured programming is a subset of procedural programming that uses logical structures in written programs to make understanding and modification more efficient and easier.

Basic structure:

1. Sequential structure

The sequential structure indicates that the operations in the program are executed in the order in which they appear. of.

2. Selection structure

The selection structure indicates that there are branches in the processing steps of the program. It needs to select one of the branches for execution based on a specific condition. . There are three types of selection structures: single selection, double selection and multiple selection.

3. Loop structure

The loop structure means that the program repeatedly performs one or more operations until a certain condition is false (or true). The cycle can be terminated. The most important thing in a loop structure is: under what circumstances is the loop executed? What operations need to be performed in a loop? There are two basic forms of loop structures: when-type loops and until-type loops.

When-type loop: indicates that the condition is judged first, and the loop body is executed when the given condition is met, and the process automatically returns to the loop entrance at the loop terminal; if the condition is not If satisfied, exit the loop body and go directly to the process exit. Because it is "execute the loop when the condition is met", that is, judge first and then execute, it is called a when loop.

Until loop: It means that the loop body is executed directly from the entrance of the structure, and the condition is judged at the loop terminal. If the condition is not met, return to the entrance to continue executing the loop body until the condition is true before exiting the loop and reaching the process. At the exit, it is executed first and judged later. Because it is "until the condition is true", it is called a until loop.

The basic structure required by structured programs does not include "GOTO jump", which is only a type of branch structure and a keyword.

C language does not limit the number of times labels are used in a program, but each label must not have the same name. The semantics of the goto statement is to change the program flow and execute the statement identified by the statement label.

The goto statement is usually used in conjunction with conditional statements. It can be used to implement conditional transfer, form a loop, jump out of the loop body and other functions.

However, the use of goto statements is generally not recommended in structured programming to avoid confusing the program flow and making it difficult to understand and debug the program.

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