Data Types in C++

While doing programming in any computer programming language, we need to use various variables in order to store various data. Variables are nothing butspecially reserved memory locations which stores differentvalues. It means that when we create a variable we actually reserve some space in memory.

We may even like to store information of various data types like character, Boolean, wide character, floating point, integer, double floating point etc. It is based on the data type of a specific variable, the operating system allocates specified memory and decides on what can be stored in that reserved memory.

Here is the list of data types used in C++ language programming along with their range and Bit Width

Type	Typical Range	Typical Bit Width
char	-127 to 127 or 0 to 255	1byte
unsigned char	0 to 255	1byte
signed char	-127 to 127	1byte
int	-2147483648 to 2147483647	4bytes
unsigned int	0 to 4294967295	4bytes
signed int	-2147483648 to 2147483647	4bytes
short int	-32768 to 32767	2bytes
unsigned short int	0 to 65,535	Range
signed short int	-32768 to 32767	Range
long int	-2,147,483,647 to 2,147,483,647	4bytes
signed long int	same as long int	4bytes
unsigned long int	0 to 4,294,967,295	4bytes
float	+/- 3.4e +/- 38 (~7 digits)	4bytes
double	+/- 1.7e +/- 308 (~15 digits)	8bytes
long double	+/- 1.7e +/- 308 (~15 digits)	8bytes
wchar_t	1 wide character	2 or 4 bytes