Data Types in C (Complete Beginner Guide)

 Introduction:-

In C programming, data types define the type of data a variable can store.

*Choosing the correct data type is important for writing efficient and error-free programs.

What Are Data Types?

A data type tells the compiler:

  • What type of value will be stored
  • How much memory should be allocated
  • What operations can be performed

Basic Data Types in C

1. int (Integer):-

Used to store whole numbers.

Example:

int age = 20;

2. float:-

Used to store decimal numbers.

Example:

float price = 99.5;

3. Double:-

Used to store large decimal numbers with more precision.

Example:

double pi = 3.141592;

4. Char:-

Used to store a single character.

Example:

char grade = 'A';

Size of Basic Data Types

Data Type:Typical Size

int:4 bytes

float:4 bytes

double:8 bytes

char:1 byte

(Note: Size may vary depending on system.)

Why Data Types Are Important

  • Efficient memory usage
  • Prevents errors
  • Improves program performance

Conclusion:-

Understanding data types is essential before learning variables, operators, and functions in C.

Mastering this concept will make advanced programming easier.

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