Data Types in C Programming

Data Types in C Programming

C Data Types: A Data type can store the value. Every variable in C has an initialize data type. It is specified the type of data that the variable can store like integer data type(int), character data type(char) , floating data type(float) and double data type etc.

C language is a statically type where every variable's data type must be specified at the declaration and once specified. It is a type of data which is used in the C program. A data types specifies the type of data stored in a variable.

There are two types of data type.

• Basic Data Types
• Derived

Basic Data Types in C

Data Type	Description	Size (bytes)	Format Specifier
int	Integer can stores whole numbers without decimals.	2 or 4	%d or %i
float	float can stores only floating-point numbers.	4	%lf
char	char can stores only a single character value.	1	%c
double	double can stores double-precision floating-point numbers.	8	%lf
void	void Represents the absence of a value do not return a value.	0	N/A

Derived Data Types in C

Array Data Type: Array is a collection of elements of the same data type stored contiguous memory location in a same single name.

Pointer Data Type: Pointer is a special type variable. It can store only address of another variable. Pointer denoted by (*) symbols. 

Function Data Type: Function is a name of block of code that perform an specific task and small number of block.

User Defined Data Types in C

Structure(struct): Structure is a group of multiple variable of different data types in a single name.

Union(union): Union allows multiple variables to share the same memory location. But union can store only one value at a time.

Enumeration(enum): Enum is a symbolic name with integer constants.

Typedef: Typedef can be used alias or new name for existing data type name.

Type of Data Types in C

Basic Data Type	Derived Data Type
Integer Type(int)	Pointer
Floating Type(float)	Array
Character Type(char)	Structure
N/A	Union

Integer Data Types in C

Data Type	Size in bytes	Range
short	2	-32768 to +32767
int	2	-32768 to +32767
unsigned int	2	0 to 65536
long	4	-2147483648 to +2147483647
unsigned long int	4	0 to 4,294,967,295

Example of Integer Data Types in C

#include<stdio.h> #include<conio.h> void main(){ clrscr(); int x=100; printf("Value of x:%d",x); getch(); } ============OUTPUT============ Value of x:100

Float Data Types in C

Data Type	Size in bytes	Range
float	4	3.4E-38 to 3.4E+38
double	8	1.7E-308 to 1.7E+308
Long double	10	3.4E-4932 to 1.1E+4932

Example of Float Data Types in C

#include<stdio.h> #include<conio.h> void main(){ clrscr(); float marks=76.8; printf("Value of Marks:%f",marks); getch(); } ============OUTPUT============ Value of Marks:76.8

Character Data Types in C

Data Type	Size in bytes	Range
char	1	-128 to +127
signed char	1	-128 to +127
unsigned char	1	0 to 255

Example of Character Data Types in C

#include<stdio.h> #include<conio.h> void main(){ clrscr(); char grade='J'; printf("Value of Grade:%c",grade); getch(); } ============OUTPUT============ Value of Grade:J

Example Size Find Data Types in C

#include<stdio.h> #include<conio.h> void main(){ clrscr(); int  x=100; float y=78.5; char c='J'; printf("Size of Integer Data:%d\n",sizeof(int)); printf("Size of Float Data:%d\n",sizeof(float)); printf("Size of Character Data:%d\n",sizeof(char)); printf("Size of Double Data:%d\n",sizeof(double)); getch(); } ============OUTPUT============ Size of Integer Data:4 Size of Float Data:4 Size of Character Data:1 Size of Double Data:8

Conclusion of Data Types in C

Conclusion: Data Types is a most important part of c programming language. It is a overview all data types. I can explain briefly define in the next topic simple and easy language. so you can support my content and suggestion any doubt you can email and comments.

C Programming Language