Data Types In C

Data Types In C

What is Data Type In C?

Data type tells the compiler how the data inside the variable is to be interpreted.

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C language has three types of data types:

1. Basic Data Type
2. Derived Data Type
3. User Defined Data Type

Basic Types are:

int - Integers are whole number which can be positive or negative or zero. For example, -1, 0, 1.

char - It is used to declare character type variables.

float and double - It is used to denote real or floating point numbers.

unsigned int - If you want to use only positive numbers then you use this keyword in front of variable or constant.

Type	Size (bytes)	Format Specifier
int	at least 2, usually 4	%d, %i
char	1	%c
float	4	%f
double	8	%lf
short int	2 usually	%hd
unsigned int	at least 2, usually 4	%u
long int	at least 4, usually 8	%ld, %li
long long int	at least 8	%lld, %lli
unsigned long int	at least 4	%lu
unsigned long long int	at least 8	%llu
signed char	1	%c
unsigned char	1	%c
long double	at least 10, usually 12 or 16	%Lf

Derived Data Types are derived from basic data types.

• Function
• Array
• Pointers
• References

User defined data types are derived from an existing data types.

• Class
• Structure
• Union
• Enumeration

We will study this topics in our coming posts. Keep visiting, thanks for sharing.