What is the difference between a structure and a union in C?

Asked by Last Modified  

2 Answers

Learn C Language

Follow 1
Answer

Please enter your answer

Ajith Kumar M

Programming Languages

Memory Allocation is the main difference between Structure and Union. Structure allocates memory for each of its members whereas Union won't do that.
Comments
Dislike Bookmark

Tutor

A structure is a user-defined data type available in C that allows to combining data items of different kinds. Structures are used to represent a record. Defining a structure: To define a structure, you must use the struct statement. The struct statement defines a new data type, with more than one member....
read more
A structure is a user-defined data type available in C that allows to combining data items of different kinds. Structures are used to represent a record. Defining a structure: To define a structure, you must use the struct statement. The struct statement defines a new data type, with more than one member. The format of the struct statement is as follows: struct [structure name] { member definition; member definition; ... member definition; }; A union is a special data type available in C that allows storing different data types in the same memory location. You can define a union with many members, but only one member can contain a value at any given time. Unions provide an efficient way of using the same memory location for multiple purposes. Defining a Union: To define a union, you must use the union statement in the same way as you did while defining a structure. The union statement defines a new data type with more than one member for your program. The format of the union statement is as follows: union [union name] { member definition; member definition; ... member definition; }; read less
Comments
Dislike Bookmark

Related Questions

What is the benefit of using an enum rather than a #define constant?
#define is a symbolic constant. symbolic constants are uppercase letters. symbolic constants above the main() function. symbolic constants are not terminated with semicolon. symbolic constants must define using #define preprocessor directive.
Basundhara
0 0
7
What are all the data types in C programming with their details?
C programming language supports several data types, which are categorized into two main groups: primitive or basic data types and derived data types. Primitive data types include: Integers: Represent...
Ganga
0 0
6
Why does execution of a program in C/C++/Java start from only main?
Main function is calling the other functions of he program and compiler gets this direction while Compiling the code. If it does not find main function then it will also not find the other functions in the code. So, main is required in C program.
Isha
Which is older - Java or C?
C is older than JAVA
Baby
When is a "switch" statement better than multiple "if" statements?
switch statement is generally best to use when you have more than two conditional expressions based on a single variable of numeric type. For instance, rather than the code if (x == 1) printf(“x...
Shalu

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

C INTRODUCTION

Nagaraju Tanguturi

0 0
0
Variables
Variables in C Language:A variable is a name that may be used to store a data value. Unlike constant, variables are changeable, we can change value of a variable during execution of a program. A programmer...

Venkateswararao S.

0 0
0
Tress And Its Traversal
Depth First Traversals:(a) Inorder (Left, Root, Right) : 4 2 5 1 3(b) Preorder (Root, Left, Right) : 1 2 4 5 3(c) Postorder (Left, Right, Root) : 4 5 2 3 1 Trees are one of the data structures like...

Sunil Yadav

1 0
0
Programing Languages Learning Tricks
You want to learn that new language or library or framework as soon as possible, right? That’s understandable. Fortunately, there are a handful of tips that can help you to better retain all of that...
H

Harshal G.

0 0
0
Basics Of C And C++
C++ is powerful, highly flexible, and adaptable programming language that allows software engineers to organise and process information quickly and effectively. But this high-level language is relatively...

Dev Group

1 0
0

Recommended Articles

Lasya Infotech: An educational Training...

Lasya Infotech is a Hyderabad based IT training institute founded in 2016 by O Venkat. Believing in his innovation, passion and persistence and with a diverse blend of experience, he started his brainchild to deliver exemplary professional courses to aspiring candidates by honing their skills. Ever since the institute envisions...

Read full article >

Brilliant Academy, a reputed B. Tech Tuition...

Brilliant Academy is one of the reputed institutes for B.Tech tuition classes. This institute is specialised in delivering quality tuition classes for B.E, Engineering - all streams and Engineering diploma courses. Incorporated in 2012, Brillant Academy is a brainchild of Mr Jagadeesh. The main motto of the academy is to...

Read full article >

8 Hottest IT Careers of 2014!

Whether it was the Internet Era of 90s or the Big Data Era of today, Information Technology (IT) has given birth to several lucrative career options for many. Though there will not be a “significant" increase in demand for IT professionals in 2014 as compared to 2013, a “steady” demand for IT professionals is rest assured...

Read full article >

Why Should you Become an IT Consultant

Information technology consultancy or Information technology consulting is a specialized field in which one can set their focus on providing advisory services to business firms on finding ways to use innovations in information technology to further their business and meet the objectives of the business. Not only does...

Read full article >

Find C Language Classes near you
C Language Classes in Bangalore
C Language Classes in Hyderabad
C Language Classes in Delhi
C Language Classes in Pune
C Language Classes in Chennai
C Language Classes in Mumbai
C Language Classes in Kolkata
C Language Classes in Noida
C Language Classes in Gurgaon
C Language Classes in Ghaziabad

Looking for C Language Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you