Aspire Faculty ID #18666 · Topic: UGC NET Computer Science Dec 2022 Shift II (Paper II) · Just now
UGC NET Computer Science Dec 2022 Shift II (Paper II)

Match the List-I and List-II

 List-I

 List-II

 a. If the implementation of generated or derived classes differs only through a parameter we have
 I. to use class hierarchy
 b. If the actual types of objects used cannot be known at compile time, then we have
II. improved run-time efficiency
 
 c. If inline operations are essential and templates are used then we have
 III. to use templates
 d. To gain access to differing instances for derived classes through base we have

 IV. to use explicit casting

Choose the correct answer from the options given below:

Solution

For a:

If implementation differs only through a parameter, templates are useful.

So,

a → III

For b:

If actual object types are not known at compile time, class hierarchy and runtime polymorphism are used.

So,

b → I

For c:

Templates allow inline operations and can improve run-time efficiency.

So,

c → II

For d:

To access derived class instances through base class reference or pointer, explicit casting may be used.

So,

d → IV

Correct matching:

a-III, b-I, c-II, d-IV

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