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Data Types in C

A data type specifies the type of data that a variable can store such as integer, floating, character, etc.

C Data Types

There are the following data types in C language.

TypesData Types
Basic Data Typeint, char, float, double
Derived Data Typearray, pointer, structure, union
Enumeration Data Typeenum
Void Data Typevoid

Basic Data Types

The basic data types are integer-based and floating-point based. C language supports both signed and unsigned literals.

The memory size of the basic data types may change according to 32 or 64-bit operating system.

Let's see the basic data types. Its size is given according to 32-bit architecture.

Data TypesMemory SizeRange
char1 byte−128 to 127
signed char1 byte−128 to 127
unsigned char1 byte0 to 255
short2 byte−32,768 to 32,767
signed short2 byte−32,768 to 32,767
unsigned short2 byte0 to 65,535
int2 byte−32,768 to 32,767
signed int2 byte−32,768 to 32,767
unsigned int2 byte0 to 65,535
short int2 byte−32,768 to 32,767
signed short int2 byte−32,768 to 32,767
unsigned short int2 byte0 to 65,535
long int4 byte-2,147,483,648 to 2,147,483,647
signed long int4 byte-2,147,483,648 to 2,147,483,647
unsigned long int4 byte0 to 4,294,967,295
float4 byte
double8 byte
long double10 byte
Next TopicKeywords in C


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