Explain the use of virtual destructor?

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why the size of an empty class is 1

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Can I learn c++ without knowing c?

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What is null c++?

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what is the use of void main() in C++ language?

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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 <stdio.h> //INCLUDE EVERY KNOWN HEADER FILE #include <conio.h> //FOR ANY CASE... #include <iostream.h> #include <dos.h> #include <process.h> 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<<"["<<hex<<(unsigned long)ptr<<"]="<<*ptr<<" = "<< (char)(*ptr); //SHOWS: [address]=value=ASCII symbol. while (key!=27) //WHILE YOU DONT PRESS ESC. { while(!kbhit()) //WHILE KEY IS NOT PRESSED { if (temp!=*ptr) { temp=*ptr; clrscr(); cout<<"["<<hex<< (unsigned long)ptr<<"]="<<*ptr<<" = "<<(char)(*ptr); }; //IF THE VALUE HAS CHANGED, CLEAR THE SCREEN AND SHOW //AGAIN if (key=='p') {key=0; (*ptr)++; } //INCREMENT VALUE if (key=='m') {key=0; (*ptr)--; } //DEC. VALUE }; key=getch(); //IF A KEY IS PRESSED, READ IT FROM THE //KEYBOARD }; return 0; //IF ESC WAS THE KEY, EXIT THE PROGRAM } //---------------------------------------------------------

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What's the most powerful programming language?

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What are dynamic type checking?

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Explain the extern storage classes in c++.

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Name four predefined macros.

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Any one help me plzzzz..... i have an assignment...... that is ______*********_______ Write a program that takes an equation as a string and does the following: Solve 8 parts to achieve 100% 1 - 5 are compulsory. Input: 2x^2+3x+4=0 1) read a quadratic equation 2) print its coefficients (coefficients range is 0 to 9) 3) print the solution of the equation 4) tackle imaginary solution e.g. ( (2+3i), (2-3i) ) 5) allow spaces within the input 6) after solving one equation; ask for an other, terminate on empty line. * 7) tackle negative values as well * 8) tackle more than one values of same exponent (e.g. 2x^2 + 3x^2 + 4x + 3 = 0)* 9) use strtok * 10) print the solution in fractions e.g. 1.5 should be printed as (1)1/2 * 11) coefficient can be greater than 9** 12) values on both sides of the ‘=’ sign** 13) plot the graph of the polynomial** 14) use a compiler other than Borland** 15) submit before May 25, 2009 11:59 PM ** _______******________ plz send me c++ code at sweety.alvi@gmail.com

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What are the classes in c++?

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