Bloomberg LP Interview Question for Software Engineer / Developers






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Why cant union in C++ have virtual functions -
1. virtual functions used with inheritance. unions do not take part in inheritance.
2. all the members of union shares same memory slot. physically base and derived members of derived class object are stored in separate memory locations. union says all my members will share same memory, inhetance says derived members will be stored after base class members hence unions can not take part in inheritance.

- sachin.magdum July 22, 2010 | Flag Reply
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The members of a union cannot be declared as static. An anonymous union declared globally must be explicitly declared static

- blueskin.neo November 21, 2010 | Flag Reply


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