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C++

Swap Two Numbers Using Pointers in C++

I wrote this program to ask the user to give two numbers and then it will swap the arrangement of the two numbers using pointers in C++ programming language.

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Program Listing

#include <iostream>
#include <string>

 using namespace std;

 int swap_value(int *a, int *b, int temp)
 {
  temp = *a;
  *a = *b;
  *b = temp;
 }

 main() {

     int a=0,b=0,temp=0;
      char reply = 'Y';

 for (; toupper(reply)== 'Y'; ) {

 cout << "\n\n";
 cout << "\t\t SWAP A NUMBER USING POINTERS";
 cout << "\n\n\t Created By: Mr. Jake R. Pomperada,MAED-IT";
 cout << "\n\n";
 cout << "Enter the first value  :=> ";
 cin >> a;
 cout << "Enter the second value :=> ";
 cin >> b;

 cout << "\nOrignal value of a : " << a <<".";
 cout << "\nOrignal value of b : " << b <<".";

 cout << "\n\n";

 swap_value(&a,&b,temp);
 cout << "After calling the function Reference/Pointer";
 cout << "\n\n";

 cout << "\nNew value of a : " << a <<".";
 cout << "\nNew value of b : " << b <<".";
 cout << "\n\n";
 cout << "Do You Want To Continue Y/N :=> ";
 cin >> reply;

 }
 if (toupper(reply) == 'N') {
     cout << "\nThank You For Using This Program.";

  }
 cout << "\n\n";
 system("PAUSE");
 }

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