Data Types of C

Data Types in C

Data types in C can be broadly classified as follows :

A summary of all the data types in C

What is a Data type ?

Ans-In computer science and computer programming, a data type or simply type is an attribute of data which tells the compiler or interpreter how the programmer intends to use the data.

Common data types include:

• Integer.
• Floating-point number.
• Character.
• String.
• Boolean.

What is a Primitive data type ?

Ans:-  Primitive type is a data type provided by a programming language as a basic building block. Primitive data types are predefined types of data, which are supported by the programming language. For example, integer, character, and string are all primitive data types.

Some Classifications and more details of the Primitive data types are as follows :-

	Explanation	Format specifier
char	Smallest addressable unit of the machine that can contain basic character set. It is an integer type. Actual type can be either signed or unsigned. It occpies 1 bits of space.	%c
signed char	Of the same size as char, but guaranteed to be signed. Capable of containing at least the [−127, +127] range.	%c (or %hhi for numerical output)
unsigned char	Of the same size as char, but guaranteed to be unsigned. Contains at least the [0, 255] range.	%c (or %hhu for numerical output)
short short int signed short signed short int	Short signed integer type. Capable of containing at least the [−32,767, +32,767] range. Thus, it is at least 16 bits in size. The negative value is −32767 (not −32768) due to the one's-complement and sign-magnitude representations allowed by the standard, though the two's-complement representation is much more common.	%hi
unsigned short unsigned short int	Short unsigned integer type. Contains at least the [0, 65,535] range.	%hu
int signed signed int	Basic signed integer type. Capable of containing at least the [−32,767, +32,767] range.Thus, it is at least 16 bits in size.	%i or %d
unsigned unsigned int	Basic unsigned integer type. Contains at least the [0, 65,535] range.	%u
long long int signed long signed long int	Long signed integer type. Capable of containing at least the [−2,147,483,647, +2,147,483,647] range. Thus, it is at least 32 bits in size.	%li
unsigned long unsigned long int	Long unsigned integer type. Capable of containing at least the [0, 4,294,967,295] range.	%lu
long long long long int signed long long signed long long int	Long long signed integer type. Capable of containing at least the [−9,223,372,036,854,775,807, +9,223,372,036,854,775,807] range. Thus, it is at least 64 bits in size. Specified since the C99 version of the standard.	%lli
unsigned long long unsigned long long int	Long long unsigned integer type. Contains at least the [0, +18,446,744,073,709,551,615] range. Specified since the C99 version of the standard.	%llu
float	Real floating-point type, usually referred to as a single-precision floating-point type. Actual properties unspecified (except minimum limits), however on most systems this is the IEEE 754 single-precision binary floating-point format (32 bits). This format is required by the optional Annex F "IEC 60559 floating-point arithmetic".	Converting from text: %f %F %g %G %e %E %a %A
double	Real floating-point type, usually referred to as a double-precision floating-point type. Actual properties unspecified (except minimum limits), however on most systems this is the IEEE 754 double-precision binary floating-point format (64 bits). This format is required by the optional Annex F "IEC 60559 floating-point arithmetic".	%lf
long double	Real floating-point type, usually mapped to an extended precision floating-point number format. Actual properties unspecified. It can be either x86 extended-precision floating-point format (80 bits, but typically 96 bits or 128 bits in memory with padding bytes), the non-IEEE "double-double" (128 bits), IEEE 754 quadruple-precision floating-point format (128 bits), or the same as double. See the article on long double for details.	%Lf

What is a Derived Data type ?

Ans :-