write the prime no program in c++?

16 Answers  

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what is data Abstraction? and give example

147 Answers   Aaditya Info Solutions, American Express, CMS, College School Exams Tests, Data Entry Operator, First Advantage, Google, HCL, IBM, Infosys, Microsoft, Mind Links, NIIT, Oracle, Pact, QBit Systems, TCS, WAYA, Wipro,

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What is meant by entry controlled loop?

0 Answers   Agilent, ZS Associates,

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What is decltype c++?

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an operation between an integer and real always yeilds a) integer result b) real result c) float result

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Difference between overloaded functions and overridden functions

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What is c++ good for?

0 Answers  

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Explain terminate() and unexpected() function?

0 Answers  

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if int1 has the value 12, int has the value 18, and int3 has the value 21, what is the result: int1 < int2 && int2 < int 3

3 Answers  

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How do you invoke a base member function from a derived class in which you’ve overridden that function?

0 Answers  

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Is it possible to get the source code back from binary file?

1 Answers  

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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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