Data Types in C Language

Data Types in C Language

The C language supports a wide variety of data types. These include:

1. Primitive Data Types:

– Integer: char, int, short, long, long long

– Floating Point: float, double

– Boolean: _Bool

– Void

2. Derived Data Types:

– Array: int array[10]

– Pointer: int *pointer

– Structure: struct student {…}

– Union: union data {…}

– Enumeration: enum color {…}

 

Data Types & Sizes

Data Type	Size (in bytes)	Description
char	1	Character type, stores a single character or ASCII code
int	4	Integer type, stores a whole number
float	4	Floating-point type, stores a decimal number with single precision
double	8	Floating-point type, stores a decimal number with double precision
short	2	Short integer type, stores a smaller whole number than int
long	8	Long integer type, stores a larger whole number than int
long long	8	Long long integer type, stores an even larger whole number than long
void	N/A	Void type, represents the absence of a value

List Of Keywords of C Language

Keyword	Description
auto	Defines a variable with automatic storage duration
break	Terminates the current loop or switch statement
case	Specifies a branch in a switch statement
char	Declares a character data type
const	Defines a variable as constant
continue	Skips the current iteration of a loop
default	Specifies the default branch in a switch statement
do	Begins a do-while loop
double	Declares a double-precision floating-point data type
else	Specifies an alternative branch in an if statement
enum	Declares an enumerated type
extern	Declares a variable or function that is defined in another file
float	Declares a floating-point data type
for	Begins a for loop
goto	Transfers control to a labeled statement
if	Begins an if statement
int	Declares an integer data type

Keyword	Description
long	Declares a long integer data type
register	Defines a variable with register storage class
return	Returns a value from a function
short	Declares a short integer data type
signed	Declares a signed data type
sizeof	Returns the size of a data type or variable
static	Defines a variable with static storage duration
struct	Defines a structured data type
switch	Begins a switch statement
typedef	Defines a new data type
union	Defines a union data type
unsigned	Declares an unsigned data type
void	Specifies that a function returns no value
volatile	Declares a variable that can be modified by hardware or other processes
while	Begins a while loop