Difference Between Structures and Unions in C Programming - Structures in C - C Programming Language

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[@tamilmaranc]

Excellent explained

[@fadyserhan9537]

good organized explanation.....but i really don't know why someone should use a union? just because it's less memory?

[@vivekjain8545]

Excellent explanation. Except one point that size of struct will be 12 bytes. Reason for this is data strcture alignment. ========================= integer takes 2 byte and than a data padding of 2 byte will be added to have a fixed word size for having a faster memory access because cpu access memory faster for a fixed word size. Now as float is of 4 byte so it occupies 4 byte. and character accupies 1 byte and 3 byte data padding will be added at the end of this variable. so the total memory allocated will be 12 bytes. ( 2byte (int) + 2byte(data padding) +4 byte(float)+1 byte(char) + 3 byte(data padding)=12 byte ). ===================

[@shaikshafi407]

hello sir! does the structure member gets allocated memory or is it the structure variable?

[@rakeshr.a8856]

bravo man!!

[@sushantthapachhetri7225]

you are awesome sir>>>well explained

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[@karthikn7179]

good to listen . Thanks

[@arnavkumar6645]

Although you clearly explained how data gets stored in union, you didn't explain how is it possible to retrieve the value of int a after being overwritten by float r and char c.

[@huyvole9724]

No, your struct have 12 bytes not 7 bytes. Reason: follow Data struct Alignment.

[@vivekjain8545]

You are right. Data strcture alignment is used to have a faster memory access.

[@khuraana1]

perfectly explnd thnks

[@jairuskabila4041]

thats nice

[@IgiveyouNONE]

Annoying music. Remove it..

[@pritikumari9962]

Concept is good...bt vry irritating video.... just bcoz this useless music..