Answer Posted / b.balaganesan

Virtual, as the name implies, is something that exists in
effect but not in reality. The concept of virtual function
is the same as a function, but it does not really exist
although it appears in needed places in a program. The
object-oriented programming language C++ implements the
concept of virtual function as a simple member function,
like all member functions of the class.

Need for Virtual Function:

The vital reason for having a virtual function is to
implement a different functionality in the derived class.

For example: a Make function in a class Vehicle may have to
make a Vehicle with red color. A class called FourWheeler,
derived or inherited from Vehicle, may have to use a blue
background and 4 tires as wheels. For this scenario, the
Make function for FourWheeler should now have a different
functionality from the one at the class called Vehicle.
This concept is called Virtual Function.

What is polymorphism used for?

1108

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What is the purpose of polymorphism?

1170

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What is encapsulation in ict?

1117

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What is class and example?

1262

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Write A Program to find the ambiguities in Multiple Inheritance? How are they resolved.(Virtual Functions)

4210

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Why do we use inheritance?

1188

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What is the difference between procedural programming and oops?

1200

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is there any choice in opting subjects like 4 out of 7

2238

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Can we have inheritance without polymorphism?

1077

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What are different types of JVM's? for example we use dalvik jvm for android then what about the remaining operating systems?

2199

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What is meant by multiple inheritance?

1333

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How does polymorphism work?

1183

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write a program using c++ to implement single contiguous memory mangement techniques.display the content of the main memory after yhe allocation of jobs and percentage of the wastage of the main memory

3269

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#include #include #include #include void insert(char *items, int count); int main(void) { char s[255]; printf("Enter a string:"); gets(s); insert(s, strlen(s)); printf("The sorted string is: %s.\n", s); getch(); return 0; } void insert(char *items, int count) { register int a, b; char t; for(a=1; a < count; ++a) { t = items[a]; for(b=a-1; (b >= 0) && (t < items[b]); b--) items[b+1] = items[b]; items[b+1] = t; } } design an algorithm for Insertion Sort

2681

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What is meant by oops concept?

1107

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