反向打印字符串

STL的应用！

#include <iostream>
#include <string>
using namespace std;

int main()
{
   const string delims(" \t,.;");
   string line;
   while (getline(cin, line))
   {
       size_t begIdx, endIdx;
       begIdx = line.find_first_not_of(delims);
       while (begIdx != string::npos)
       {
           endIdx = line.find_first_of(delims, begIdx);
           if (endIdx == string::npos)
           {
               endIdx = line.length();
           }
           for (int i = endIdx-1; i >= static_cast<int>(begIdx); --i)
           {
               cout << line[i];
           }
           cout << " ";
           begIdx = line.find_first_not_of(delims, endIdx);
       }
       cout << endl;
   }
}