"Data types specifies the type and size of data . "
A program contains different types of data (integer , real , character etc.) and need to store values being used in the program . C++ language is rich of data types .
It is divided into three types ------------------
- Primary data types
- Derived data types
- User Defined data types
Data Type | Size (in bytes) | Range |
|---|---|---|
short int | 2 | -32,768 to 32,767 |
unsigned short int | 2 | 0 to 65,535 |
unsigned int | 4 | 0 to 4,294,967,295 |
int | 4 | -2,147,483,648 to 2,147,483,647 |
long int | 4 | -2,147,483,648 to 2,147,483,647 |
unsigned long int | 4 | 0 to 4,294,967,295 |
long long int | 8 | -(2^63) to (2^63)-1 |
unsigned long long int | 8 | 0 to 18,446,744,073,709,551,615 |
signed char | 1 | -128 to 127 |
unsigned char | 1 | 0 to 255 |
float | 4 |
|
double | 8 |
|
long double | 12 |
|
wchar_t | 2 or 4 | 1 wide character |
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