Answer Posted / hrpynux@gmail.com

Pointers: A pointer is a variable that holds memory address of another variable. ... References : A reference variable is an alias, that is, another name for an already existing variable. A reference, like a pointer, is also implemented by storing the address of an object.

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<<"["<

2100

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What are c++ templates used for?

873

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What is the maximum value of a unsigned char a) 255 b) 256 c) 128

853

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808

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What is the size of integer variable?

808

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Explain the isa and hasa class relationships.

785

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Will c++ be replaced?

822

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Explain about templates of C++.

895

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What is the hardest coding language to learn?

799

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817

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876

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Differentiate between realloc() and free().

775

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868

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784

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What is #include cstdlib in c++?

896

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