Define the difference between union and structure, Computer Engineering

Assignment Help:

Define the difference between union and structure

The main difference between union and structure is the storage allocation. In Union , for each variable the compiler allocates a piece of storage that can accommodate the largestof the specified member. For example, consider the above structure is redefined as a 'union'.

union stud{

} student;

char name[15];

int regno;

char address[40];

Here the compiler allocates a storage that can accommodate 'address'. All the other variables in the structure share that location. i.e., name and reg.no values are stored in the same location where the address was stored.

But in structure each variable allocates it own storage area.

 

 


Related Discussions:- Define the difference between union and structure

What is real time clock, Real time clock A real-time clock keeps the t...

Real time clock A real-time clock keeps the time in real time - i.e. in hours and minutes. Software for the real-time clock comprises an interrupt service procedure which is c

Flynn’s classification, Flynn's Classification  This classification was...

Flynn's Classification  This classification was early proposed and studied by Michael Flynn in 1972. Flynn did not believe the machine architecture for organization of parallel

Is tcp connection-oriented?, Q. Is tcp Connection-oriented? TCP is conn...

Q. Is tcp Connection-oriented? TCP is connection-oriented. This means a connection is established between source and destination machines before any data is sent it implies tha

Explain that datagram cannot be larger than mtu of a network, "A datagram c...

"A datagram cannot be larger than the MTU of a network over which it is sent." Is the statement true or false? Explain with the help of a suitable example. All hardware technol

Discuss in detail the subscriber loop systems, Discuss in detail the subscr...

Discuss in detail the subscriber loop systems. Subscriber Loop System: Every subscriber in a telephone network is linked usually to the nearest switching office by means of w

Explain importance of different types of distributing frames, Explain impor...

Explain importance of the different types of distributing frames used in exchanges. Here MDF = main distribution frame; MF = main feeder; FP = feeder point; BF = branch f

What is sector sparing, What is sector sparing? Low-level formatting al...

What is sector sparing? Low-level formatting also sets aside spare sectors not visible to the operating system. The controller can be told to change each bad sector logically w

Can we use flow logic control key words in abap/4, Can we use flow logic co...

Can we use flow logic control key words in ABAP/4 and vice-versa The flow control  of a dynpro having os a few statements that syntactically ressemble ABAP/4  statements .Thou

Classified the vlsi technology, The VLSI technology is still developing. Mo...

The VLSI technology is still developing. More and more powerful microprocessors and more storage space now are being put in single chip. One question that we have still not conside

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd