C++ Tutorial/STL Algorithms Min Max/max — различия между версиями
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Версия 14:21, 25 мая 2010
Call max() with special comparison function
/* The following code example is taken from the book
* "The C++ Standard Library - A Tutorial and Reference"
* by Nicolai M. Josuttis, Addison-Wesley, 1999
*
* (C) Copyright Nicolai M. Josuttis 1999.
* Permission to copy, use, modify, sell and distribute this software
* is granted provided this copyright notice appears in all copies.
* This software is provided "as is" without express or implied
* warranty, and with no claim as to its suitability for any purpose.
*/
#include <algorithm>
#include <iostream>
using namespace std;
/* function that compares two pointers by comparing the values to which they po
int
*/
bool int_ptr_less (int* a, int* b)
{
return *a < *b;
}
int main()
{
int x = 17;
int y = 42;
int* px = &x;
int* py = &y;
int* pmax;
// call max() with special comparison function
pmax = max (px, py, int_ptr_less);
cout << *pmax;
//...
}42
max
#include <iostream>
using std::cout;
using std::endl;
#include <algorithm>
int main()
{
cout << "\nThe maximum of "G" and "Z" is: " << std::max( "G", "Z" );
cout << "\nThe maximum of 12 and 7 is: " << std::max( 12, 7 );
cout << endl;
return 0;
}The maximum of "G" and "Z" is: Z The maximum of 12 and 7 is: 12
min and max
#include <iostream>
#include <algorithm>
using namespace std;
int main()
{
cout << "The minimum of 12 and 7 is: " << min( 12, 7 );
cout << "\nThe maximum of 12 and 7 is: " << max( 12, 7 );
cout << "\nThe minimum of "G" and "Z" is: "
<< min( "G", "Z" );
cout << "\nThe maximum of "G" and "Z" is: "
<< max( "G", "Z" ) << endl;
return 0;
}