Wednesday 15 July 2020

Difference between Union & Structure


SN.
Structure
Union
1
Struct keyword is used to make structure variable
Union  keyword is used to make structure variable
2
Structure is user defined data type which is used frequently to represent real word data type presentation.
Union is also a user defined data type which is used to achieve specific need.
3
Structure allocates memory for its all member.
Union allocates memory only for the biggest data member.
4
All member data can be hold at same time in a structure variable.
Only one data from member can be hold at a time.
5
Several members can be initialized at ones.
Only first member can be initialized.


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