A detailed explanation of the knowledge points of structure parent child relationship construction

Mondo Social Updated on 2024-02-23

A detailed explanation of the knowledge points of structure parent-child relationship construction

In programming, a struct is a composite data type that allows you to combine different types of data into a single type. Structs are often used to encapsulate related data to make it easier to manage and manipulate it. When there is a parent-child relationship between structs, this structure can be more flexible to simulate complex relationships in the real world.

First, the structure of the foundation

First, let's review the basics of structs. In C, structs are defined as follows:

c. Copy**struct student;
A name calledstudentIt contains three members:name(an array of characters),age(an integer) andscore(a floating-point number).

2. Structure pointers

In C, struct pointers are used to point to the memory address of a struct. This allows us to access and modify the members of the struct through pointers.

cCopy**.

3. Structural parent-child relationship

When a struct contains members of another struct, we say that there is a parent-child relationship between the two structs. Child structs (or member structs) are nested within parent structs.

cCopy**.

In this example,studentThe structure contains:addressstruct as one of its members. In this way,studentstructsaddressAll members of the struct.

4. Access the members of the nested struct

Use the dot operator () or the arrow operator () can access the members of a nested struct.

cCopy**.

5. Struct arrays

Structs can also be defined as arrays, so you can store multiple instances of structs of the same type.

cCopy**.

6. Structures and Functions

Structs are often used with functions to pass complex data structures or to return multiple values. 

c copy void printstudent(struct student *s).
In this example,printstudentThe function accepts a pointstudentThe pointer to the struct is used as a parameter, and all members of the struct are printed out.

Summary

Struct parent-child construction is an important concept in C that allows you to create more complex data structures to simulate real-world objects. By understanding the basics of structs, struct pointers, struct arrays, and interacting with functions, you can use structs more flexibly to organize and manipulate data.

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