1600 PMP mock questions 1400 CAPM mock questions 800 SCJP 6 mock questions 600 OCAJP 7 mock questions 590 OCPJP 7 mock questions 556 SCWCD 5 mock questions 500 OCEJWCD 6 mock questions pdfDownload (java,struts, hibernet etc)

C C++ interview questions

!!! C C++ interview questions !!!

What is class invariant?



A class invariant is a
condition that defines all valid states for an object. It is a logical
condition to ensure the correct working of a class. Class invariants
must hold when an object is created, and they must be preserved under
all operations of the class. In particular all class invariants are
both preconditions and post-conditions for all operations or member
functions of the class.

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