What is Data Type in C

In C programming, data type is the classification of data types that variables or constants can hold. It specifies the value that can be created, the operations that can be performed on it, and how it will be stored in memory.

 

There are the following data types in C language.

 

1. Basic Data Types:

• int: used to store the number of numbers.
• float: used to store single precision floating point number.
• double: used to store double precision floating point numbers.
• characters: Used to store one character.

2. Derived data type:

• Array: Collection of elements of the same data type.
• Pointer: A variable that stores the memory address of another variable.
• Structure: A user-defined data type that groups data for different data objects.
• Union: A special data type that allows multiple data types to be stored in the same memory location.
• Enum: A user-defined data type used to name constant numbers, making programs easier to read and manage.

3. Void data type:

• Void: Type representation does not exist. It is often used as a return type for functions that do not return a value and indicates that there are no spaces in the sample structure.

4. Other data types:

• long: Used to store numbers with an extension compared to int.
• long long: used to store numbers larger than the long.
• short: Used to store integers smaller than int.
• unsigned: used to store non-negative values. Section
• _Bool: Used to store Boolean values ​​(true or false).

1. Basic Data Type

Simple data types represent simple data types that are directly supported by programming languages.

• Syntax

data_type variable_name;

• Example

int age = 25;

float temperature = 98.6;

char grade = ‘A’;

2. Derived Data Type

Available data types are derived from basic data types and include arrays, measures, formulas, joins, and functions.

• Array Syntax:

data_type array_name[array_size];

• Pointer Syntax

data_type *pointer_name;

• Structure Syntax:

struct structure_name {

data_type member1;

data_type member2;

// Additional members

};

• Union Syntax:

union union_name {

data_type member1;

data_type member2;

// Additional members

};

• Enum Syntax:

enum enum_name {

constant1,

constant2,

// Additional constants

};

•  Example:

int numbers[5];

int *ptr;

struct Person {

char name[50];

int age;

} person1;

union Data {

int intValue;

float floatValue;

} data;

3. Void Data Type:

The data type void indicates that there is no type. It is often used as a return type for functions that do not return a value and indicates that the parameter has no type.

• Syntax for Function Return Type

void function_name(parameters);

• Syntax for Pointer Type

void *pointer_name;

• Example

void greet() {

    printf(“programmer__coding\n”);

}

4. Other Data Types:

In addition to enum and void, int, float, double, char, etc. In addition to simple data types such as , there are also variables (such as long, short, signed, unsigned) and various types (such as arrays, models). and unions)

• Examples for other data types are

int age = 25;

float temperature = 98.6;

char grade = ‘A’;

long population = 7654321;

unsigned int count = 100;

short temperature = -10;