Answer Posted / helloworld

I believe pure virtual function is a member function with a
declaration as NULL;
virtual void fun()=0;
Now why zero,since the internal implementation of virtual
function is collection of function pointer ...we intialize
this value of function pointers as NULL.

Which is best ide for c++?

1062

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What is the identity function in c++? How is it useful?

1095

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What is the history of c++?

1132

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What is iomanip c++?

1112

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Explain the extern storage classes in c++.

1104

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What are the 4 types of library?

1239

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When does a 'this' pointer get created?

1146

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How can you link a c program with a c function?

1126

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Must accepts "Maestro Cards" Tax for bike should be less than 15 Total number of lanes is more than 10 Must provides monthly pass Write a method: boolean isGoodTollBridge(String[] cardsAccepted, String[] tollTax, boolean hasMonthlyPass, int numberOfLanes); String[] cardsAccepted A String array of names of card types accepted for payment of toll tax, it can be null if the toll does not accept any card String[] tollTax A String array of toll tax chart (say “Train : 300”,”BullCart : 10”) boolean hasMonthlyPass This parameter defines whether there is any monthly pass available or not int numberOfLanes This parameter defines the number of lanes for each side

3507

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What is the array and initializing arrays in c++?

1073

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Will a recursive function without an end condition every quit, in practice a) Compiler-Specific (Some can convert to an infinite loop) b) No c) Yes

1130

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how can i access a direct (absolute, not the offset) memory address? here is what i tried: wrote a program that ask's for an address from the user, creates a FAR pointer to that adress and shows it. then the user can increment/decrement the value in that address by pressing p(inc+) and m(dec-). NOW, i compiled that program and opened it twice (in 2 different windows) and gave twice the same address to it. now look what happen - if i change the value in one "window" of the program, it DOES NOT change in the other! even if they point to the same address in the memory! here is the code snippet: //------------------------------------------------------ #include //INCLUDE EVERY KNOWN HEADER FILE #include //FOR ANY CASE... #include #include #include main() { int far *ptr; //FAR POINTER!!! long address; char key=0; //A KEY FROM THE KEYBOARD int temp=0; clrscr(); cout<<"Enter Address:"; cin>>hex>>address; //GETS THE ADDRESS clrscr(); (long)ptr=address; temp=*ptr; //PUTS THE ADDRESS IN THE PTR cout<<"["<

2473

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Explain the difference between c & c++?

1135

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What do you understand by zombie objects in c++?

1159

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In a function declaration what does extern means?

1104

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