C Programming for Beginners – Chapter 24 : Structures in C

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Structures in C programming are a way of grouping together related data items into a single unit. In this article, we’ll explain what structures are, why they are useful, and how to use them in your C programs.

A structure is essentially a custom data type that you can define to store related information in a single unit. For example, you might define a structure to represent a person, with fields for their name, age, and address. You can then create instances of this structure to represent specific people in your program.

To define a structure in C, you use the “struct” keyword followed by the structure name and a list of fields. Each field represents a piece of information that you want to store in the structure, and has a type and a name. For example, the following code defines a structure called “person” with three fields:

struct person { 
               char name[100]; 
               int age; 
               char address[200]; 

Once you’ve defined a structure, you can create variables of that type using the structure name. For example, the following code creates a variable called “person1” of type “person”:

struct person person1;

You can then assign values to the fields of the structure using the dot notation. For example, the following code sets the name and age of person1:

strcpy(person1.name, "John Doe"); 
person1.age = 30;

In addition to declaring individual structure variables, you can also declare arrays of structures. This allows you to store multiple instances of a structure in a single array. For example, the following code declares an array of 10 persons:

struct person persons[10];

Structures are useful in C programming because they allow you to group related data items together into a single unit. This makes it easier to organize your data and makes your code more readable and maintainable. For example, if you have a program that keeps track of many people, you can use a structure to store the information for each person, rather than using separate variables for each person’s name, age, and address.

In conclusion, structures in C programming are a way of grouping related data items into a single unit. They are useful for organizing your data, making your code more readable and maintainable, and for representing complex data types in your programs. With a solid understanding of structures, you’ll be well on your way to becoming a skilled C programmer.

C Programming for Beginners – Chapter 24 : Structures in C


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