Match the List-I and List-II

d.To gain access to IV. to use explicit differing instances for casting derived classes through base we have

Choose the correct answer from the options Q given below:

1. Aa-I, b-II, c-IV, d-III
2. Ba-III, b-I, c-II, d-IV
3. Ca-I, b-III, c-II, d-IV
4. Da-II, b-I, c-III, d-IV

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: B. a-III, b-I, c-II, d-IV

Explanation

If classes differ only by a parameter, use templates; if actual types are known only at run time, use a class hierarchy; inline operations with templates give run-time efficiency; reaching derived-class specifics through a base needs explicit casting.