CS201 GDB Fall 2011

[athar1984]

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GDB Dated: Jan 18, 12
Dear Students,
Below is a topic for GDB. Please make sure that your reply should be precise and to the point.
GDB will remain open for two consecutive working days from 23rd January to 24th January. Also make sure you post your GDB on time as No GDB will be accepted via email in any case.
Topic is as follows:

You have two classes, Class A and Class B. Being a programmer either you can implement Class B as nested class of Class A or you can inherit Class B from Class A.

These are two ways to describe the relationship between classes. Discuses the situations in which, concept of public inheritance and nested class is more appropriate to use. Justify with solid reasons.

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[sharjeelshamshir]

sol bi upload kro yr

[Vuhelper]

idea solution


Any time you use public inheritance, you should make sure that any function
or object that expects a base class object will also be satisfied by a
derived class obejct as well, because the derived class object "is a" base
class object. If you're creating a class that "is a" base class (such as a
math student "is a" student), then inheritance is fine.
If your new class needs to utilize the behavior of the base class, but can't
actually be substituted for a base class object (even if just in one special
case), then layering (using a nested class) is a better approach. That's
referred to as the "is implemented in terms of" relationship.

[sharjeelshamshir]

thanks for sharing

[Vuhelper]

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[sbohi]

thank u so much

[Vuhelper]

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