判断两个vector是否相等

转载:http://blog.chinaunix.net/xmlrpc.php?r=blog/article&uid=26354188&id=3198604

 #include <iostream>
 #include <vector>

 using namespace std;

 int main()
 {
     vector<int> ivec1, ivec2;
     int ival,iva2;

     cout<<"Enter numbers for vector1(-1 to end): "<<endl;
     cin >> ival;
     while (ival != -)
     {
         ivec1.push_back(ival);
         cin >> ival;
     }
     cout<<"Enter numbers for vector2(-1 to end): "<<endl;
     cin >> iva2;
     while (iva2 != -)
     {
         ivec2.push_back(iva2);
         cin >> iva2;
     }

     if (ivec1.size() != ivec2.size())
         cout<<"Vector1 is not equal to vector2."<<endl;
     else if(ivec1.size() == )
         cout<<"Vector1 is equal to vector2"<<endl;
     else
     {
         vector<int>::iterator iter1, iter2;
         iter1 = ivec1.begin();
         iter2 = ivec2.begin();
         while (iter1 != ivec1.end() && iter2 != ivec2.end()
             && *iter1 == *iter2)
         {
             ++iter1;
             ++iter2;
         }
         if(iter1 == ivec1.end())
             cout<<"Vector1 is equal to vector2."<<endl;
         else
             cout<<"Vector1 is not equal to vector2."<<endl;
     }
     return ;
 }