STL_Algorithm7: swap

#include<iostream>

#include<algorithm>

#include<iterator>

 

using std::cout;

using std::endl;

 

int main()

{

    const int SIZE = 10;

    int a[ SIZE ] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

    std::ostream_iterator< int > outputIt( cout, " " );

 

    cout<<"Array a contains:/n   ";

    std::copy( a, a + SIZE, outputIt );

 

    std::swap( a[ 0 ], a[1] );

 

    cout<<"/nArray a after swapping a[0] and a[1] "

        <<"using swap:/n   ";

    std::copy( a, a + SIZE, outputIt );

 

    std::iter_swap( &a[0], &a[1] );

    cout<<"/nArray a after swapping a[0] and a[1] "

        <<"using iter_swap:/n   ";

    std::copy( a, a + SIZE, outputIt );

 

    std::swap_ranges( a, a + 5, a + 5 );

 

    cout<< "/nArray a after swapping the first five elements/n"

        <<"with the last five elements:/n   ";

    std::copy( a, a + SIZE, outputIt );

 

    cout<<endl;

 

    return 0;

}