fig20_32.cpp

来自「经典vc教程的例子程序」· C++ 代码 · 共 35 行

// Fig. 20.32: fig20_32.cpp
// Demonstrates iter_swap, swap and swap_ranges.
#include <iostream>
#include <algorithm>

using namespace std;

int main()
{
   const int SIZE = 10;
   int a[ SIZE ] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
   ostream_iterator< int > output( cout, " " );

   cout << "Array a contains:\n";
   copy( a, a + SIZE, output );

   swap( a[ 0 ], a[ 1 ] );
   cout << "\nArray a after swapping a[0] and a[1] "
        << "using swap:\n";
   copy( a, a + SIZE, output );

   iter_swap( &a[ 0 ], &a[ 1 ] );
   cout << "\nArray a after swapping a[0] and a[1] "
        << "using iter_swap:\n";
   copy( a, a + SIZE, output );

   swap_ranges( a, a + 5, a + 5 );
   cout << "\nArray a after swapping the first five elements\n"
        << "with the last five elements:\n";
   copy( a, a + SIZE, output );

   cout << endl;
   return 0;
}