What are the data types and how many types of it? - Study24x7
Social learning Network
study24x7

Default error msg

Login

New to Study24x7 ? Join Now
Already have an account? Login
googlePlay app_img

What are the data types and how many types of it?

Updated on 10 June 2020
study24x7
COMPUTER PROGRAMMING 2020
7 min read 26 views
Updated on 10 June 2020
Share this article
Copy Link Link Copied
NAT Banner

In programming, data types are declarations for variables. This determines the type and size of data associated with variables.


In JAVA, Data types in two groups:-


1.Primitive data types :-


Byte, short, int, long, float, double, char and boolean


 2.Non-primitive data types :-


string, arrays, class


 Data Type in C++


1.User derived Data Type- Structure, Union, Enum

2.Built in Data Type- int, char, float, double Boolean, void, wide character

3.Derived Data Type- Array, Function, Pointer



Size and Range of Data Types in C

Type
Size(bits)
Range
Char or signed char
8
-128 to 127
Unsigned char
8
0 to 255
Int or signed int
16
-32,768 to 32,767
Unsigned int
16
0 to 65535
Float
32
3.4E -38 to 3.4E +38
Double
64
1.7E – 308 to 1.7E + 4932


Integer Data Type:-


Integers are whole numbers with a range of values.  It represented by int. In C, There are three classes of integers storage, that are short int, int and long int in both signed and unsigned forms

Commas, decimals and special signs not allowed.

Examples:-

VALID
0
5
-10
+24
1000
+47
INVALID
$4567
2.4
1,456
9.
1,789.50
9,567,560


Example:-

int num = 100;


Characters


The char data type is used to store a single character. Characters are usually stored in 8 bits (1 byte) of internal storage. The character represented by single quotes, like 'A' or 'd'


Float


Floating point numbers are defined by keyword float

Examples:

float num = 1.789;

double num = 10008.90898;


void type


It has no value. This is usually used to specify the type of functions. The type of the function is to be void


DATA TYPES and VARIABLES declaration in C


Example


int a = 4000; // positive integer data type

float b = 5.789; // float data type

char c = 'p'; // char data type

long d = 41657; // long positive integer data type   

int e = -185; // -ve integer data type

double f = 4.1234567890; // double float data type

float g = -3.55; // float data type


User-Defined Data Types:


These data types are defined by user itself. Like, defining a class in C++ or a structure. In C++ there are different user defined data types:


·Class

·Typedef defined DataType

·Structure

·Union

·Enumeration

               

In C , Some examples of type definition are:-


typedef int units;

typedef float marks;

Here, units symbolizes int and marks symbolizes float. They can be later used to declare variables:-

units batch1, batch2;

marks name1[50], name2[50];

Another user defined data type is enumerated data type :-

Enum identifier {value1, value2,…valuen};


Derived Data Type-

Array, Function, Pointer


Data Types
Description
Arrays
Arrays are sequences of data items having homogeneous values. They have adjacent memory locations to store values.
Pointers
In C , which are used to access the memory and deal with addresses.



NOTE:-Keep visit to learn the Benefits of Computer Programming


For more information you can visit this page


COMPUTER PROGRAMMING 2020

 


Computer Programming
Like| 2 Comment
study24x7
Write a comment...
Trending Articles

Best Study timetable for class 8th students

By CBSE CLASS 8

HOW TO WRITE CERTIFICATE SECTION FOR CLASS XII SCHOOL PROJE...

By Edubabble LLP

Best topic ideas for class 7 Science projects

By CBSE CLASS 7

The best daily routine for class 8 students

By CBSE CLASS 8
Featured Courses
Related Posts

Check these related articles on Study24x7

How can your business enter the Metaverse?
7 min read 6 views

Imagine a virtual world where people interact, work, and shop with others – all from the comfort of their homes. This is known as the metaverse. Ever

Sam Anderson

Different Steps to improve your Database Performance
7 min read 1 views

Optimize Queries In most cases, performance issues are caused by poor SQL queries performance. When trying to optimize those queries, you’ll run into

All About Databases

23 followers

10 Advantages of using Social Learning Network
7 min read 49 views

What is the Social Learning Network? A social learning network is a single place where learners and educators can collaborate with each other and

Study24x7

1218 followers

Google Page Rank
6 min read 26 views

Pay per click is where you agree to pay a certain amount of money when people click on an advert that you have created. Programs such as adwords from

Raskesh Das

Overview- Online certification for data science with Python
29 min read 33 views

Certification course for Data science with Python Data science is a multidisciplinary field that involves extracting actionable insights and knowle

Karan Singh

104 followers

Tips to Learn Programming language easily
7 min read 0 views

Programming is problem solving and analytical skills. If you are good in mathematics and easily resolved the problems then you can become a good progr

COMPUTER PROGRAMMING 2020

38 followers

What is information retrieval systems?
29 min read 20 views

Information retrieval systems are computer-based tools and techniques used to search and retrieve relevant information from a large collection of d

Ashish Verma

208 followers

Serialization and Deserialization in Java
7 min read 39 views

Serialization is changing the state of Object into binary stream or byte stream. Deserialization is the reverse process where byte stream changes into

javalearning

86 followers

Share this article
Copy Link Link Copied