Answer Posted / amar

Copy constructors is used in following cases.
1) When object is passed by values to a fucntion
2) when function returns object by value
3) When new object is created from exixting object using
overlaoded = operator.

If user has not defined its own copy constructor, compiler
synthesised constructor would be called which will do
shallow copy. So if you have pointer in your class then only
the pointer value is copied and not the contents which
pointer points to.

What is the main function c++?

1130

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Would you rather wait for quicksort, linear search, or bubble sort on a 200000 element array? (Or go to lunch...) a) Quicksort b) Linear Search c) Bubble Sort

1049

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What are pointers, when declared, intialized to a) NULL b) Newly allocated memory c) Nothing. Its random

1137

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1146

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1455

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1140

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1001

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1111

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Describe the advantages of operator overloading?

1048

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what is data encapsulation in C++?

1073

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1107

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If you don’t declare a return value, what type of return value is assumed?

954

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How to demonstrate the use of a variable?

1124

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What is the difference between the indirection operator and the address of oper-ator?

1120

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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<<"["<

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