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

In which program we use character constants?
For the name of months, animal, colors we do use it.
Mona
What is the importance of pointers? People stress more on them. Why they are useful actually what is their importance?
Importance of pointers:- Pointers are used in situations when passing actual values is difficult or not desired. To return more than one value from a function. They increase the execution speed. The...
Pati
What is the difference between ++var and var++?
First one is present increment and second one is the post incremental t of the variable. Both increases value of var to one. The difference between pre and post increment is given in below example. Int...
Chittaranjan
I’ve been learning C language for 3 weeks but it’s becoming more difficult. As a result, I’m becoming lazy. What should I do to motivate myself?
Learn algorithm or flowchart first. Once you start C, try to relate with real time example. Example: When learn printf() , think about a a bill where you customer information is printed. Similarly when...
Akhilesh
0 0
View Comments5
In Java programming, what are the differences between the functions of 'int' and 'int []' when working with an array?
INT type of function return type is int where as for int return type is int array.
Kalpana
0 0
View Comments5

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
View Comments0
Operators in C
Operators in C Operator: An operator is a symbol that tells the compiler to perform certain mathematical or logical calculations. Operators are used in programs to manipulate data and variables. The...

Venkateswararao S.

0 0
View Comments0
Storage classes in c
Storage classes determine the scope and life time of a variable. Scope is defined as the region over which the defined variable is accessible. Lifetime is the time during which the value of a variable...

Swetha K.

0 0
View Comments0
C Program-Infinite Loop[For] Demo
//Header Files #include<stdio.h>#include<conio.h> //Main function void main(){ //Function for clearing screen clrscr(); //Infinite for loop for(;;) { printf("Hello!"); } //Function for...

Salim Ahmed Ansari

0 0
View Comments0
How do i get best Campus / Off Campus Placement?
Companies are looking for Skilled Freshers. So build your technical skills while doing MCA / BTech / BCA / BSc (IT or CS) into below areas- 1. Strong your programming & debugging skills ...

Amit K.

0 0
View Comments0

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 Mumbai
C Language Classes in Chennai
C Language Classes in Kolkata
C Language Classes in Ghaziabad
C Language Classes in Noida
C Language Classes in Jaipur

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