Re: C++ Primer ex 7.6

From:
"Alf P. Steinbach" <alfps@start.no>
Newsgroups:
comp.lang.c++
Date:
Fri, 10 Aug 2007 13:49:18 +0200
Message-ID:
<13bok9v6ev4vh07@corp.supernews.com>
* arnuld:

can we make it better?

/* C++ Primer - 4/e
 *
 * exercise 7.6
 * STATEMENT:
 * write a funtion that swap vales pointed by two pointers to int.
 */

#include <iostream>

int swap_values(int* ip, int* jp)
{
  int temp = *ip;
  *ip = *jp;
  *jp = temp;
  
  return 0;
}

int main()
{
  std::cout << "enter 2 integers: " << '\n';
  
  std::cout << " i = ";
  int i;
  std::cin >> i;

  std::cout << " j = ";
  int j;
  std::cin >> j;

  int* ip = &i;
  int* jp = &j;
  swap_values( ip, jp );

  std::cout << "values swapped: " << '\n'
        << " i = " << i
        << " j = " << j
        << std::endl;

  return 0;
}


Yes, you can (1) make those pointers point to const int, as you did in
previous exercise, and (2) implement the function in terms of std::swap.

--
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