chapter8-16.cpp

来自「C++STL程序员开发指南」· C++ 代码 · 共 34 行

//文件名:CHAPTER8-16.cpp
#include <list>
#if _MSC_VER > 1020   // if VC++ version is > 4.2
   using namespace std;  // std c++ libs implemented in std
#endif
#include <iostream>
int main( ) 
{
   using namespace std;
   list <int> c1;
   list <int>::iterator c1_Iter;
   list <int>::reverse_iterator c1_rIter;
   // If the following line replaced the line above, *c1_rIter = 40;
   // (below) would be an error
   //list <int>::const_reverse_iterator c1_rIter;
   c1.push_back( 10 );
   c1.push_back( 20 );
   c1.push_back( 30 );
   c1_rIter = c1.rbegin( );
   cout << "The last element in the list is " << *c1_rIter << "." << endl;
   cout << "The list is:";
   for ( c1_Iter = c1.begin( ); c1_Iter != c1.end( ); c1_Iter++ )
      cout << " " << *c1_Iter;
   cout << endl;
   // rbegin can be used to start an iteration through a list in reverse order
   cout << "The reversed list is:";
   for ( c1_rIter = c1.rbegin( ); c1_rIter != c1.rend( ); c1_rIter++ )
      cout << " " << *c1_rIter;
   cout << endl;
   c1_rIter = c1.rbegin( );
   *c1_rIter = 40;
   cout << "The last element in the list is now " << *c1_rIter << "." << endl;
}