ptrorder.cpp

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// ptrorder.cpp
// orders two arguments using pointers
#include <iostream>
using namespace std;

int main()
   {
   void order(int*, int*);         //prototype

   int n1=99, n2=11;               //one pair ordered, one not
   int n3=22, n4=88;

   order(&n1, &n2);                //order each pair of numbers
   order(&n3, &n4);

   cout << "n1=" << n1 << endl;    //print out all numbers
   cout << "n2=" << n2 << endl;
   cout << "n3=" << n3 << endl;
   cout << "n4=" << n4 << endl;
   return 0;
   }
//--------------------------------------------------------------
void order(int* numb1, int* numb2) //orders two numbers
   {                               
   if(*numb1 > *numb2)             //if 1st larger than 2nd,
      {
      int temp = *numb1;           //swap them
      *numb1 = *numb2;
      *numb2 = temp;
      }
   }