Write a C++ Program to Multiply two Numbers

1 Answers  

---

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 } //---------------------------------------------------------

0 Answers  

---

Why do we use the using declaration?

0 Answers  

---

How do you print for example the integers 3,2,1,5,4 in a binary tree within the console in format where it looks like an actual binary tree?

0 Answers  

---

How is an Abstract Base Class(ABC) related to an "Abstract Data Type" (ADT)

2 Answers  

---

Is c++ the most powerful language?

0 Answers  

---

Does a derived class inherit or doesn't inherit?

0 Answers  

---

Do you know what are static and dynamic type checking?

0 Answers  

---

Write a code/algo to find the frequency of each element in an array?

0 Answers   Axtria,

---

write a c++ program to create class student having datamember name,Roll_no,age,and branch intilcization all the member using constructor print the all the details on the screen.

0 Answers  

---

What methods can be overridden in java?

0 Answers  

---

What is a static member?

0 Answers  

---