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C++ Data types

C++ Data types for beginners and professionals with examples on constructor, if-else, switch, break, continue, comments, arrays, object and class, exception, static, structs, inheritance, aggregation etc.

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C++ Data Types

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

Cpp Data typews 1

There are 4 types of data types in C++ language.

Types Data Types
Basic Data Type int, char, float, double, etc
Derived Data Type array, pointer, etc
Enumeration Data Type enum
User Defined Data Type structure

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 basic data types may change according to 32 or 64 bit operating system.

Let's see the basic data types. It size is given according to 32 bit OS.

Data Types Memory Size Range
char 1 byte -128 to 127
signed char 1 byte -128 to 127
unsigned char 1 byte 0 to 127
short 2 byte -32,768 to 32,767
signed short 2 byte -32,768 to 32,767
unsigned short 2 byte 0 to 32,767
int 2 byte -32,768 to 32,767
signed int 2 byte -32,768 to 32,767
unsigned int 2 byte 0 to 32,767
short int 2 byte -32,768 to 32,767
signed short int 2 byte -32,768 to 32,767
unsigned short int 2 byte 0 to 32,767
long int 4 byte
signed long int 4 byte
unsigned long int 4 byte
float 4 byte
double 8 byte
long double 10 byte
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