1 #include <iostream> 2 #include <vector> 3  4 using namespace std; 5  6 int main() 7 { 8     vector<int> ivec1, ivec2; 9     int ival,iva2;10 11     cout<<"Enter numbers for vector1(-1 to end): "<<endl;12     cin >> ival;13     while (ival != -1)14     {15         ivec1.push_back(ival);16         cin >> ival;17     }18     cout<<"Enter numbers for vector2(-1 to end): "<<endl;19     cin >> ival;20     while (ival != -1)21     {22         ivec2.push_back(ival);23         cin >> iva2;24     }25 26     if (ivec1.size() != ivec2.size())27         cout<<"Vector1 is not equal to vector2."<<endl;28     else if(ivec1.size() == 0)29         cout<<"Vector1 is equal to vector2"<<endl;30     else31     {32         vector<int>::iterator iter1, iter2;33         iter1 = ivec1.begin();34         iter2 = ivec2.begin();35         while (iter1 != ivec1.end() && iter2 != ivec2.end()36             && *iter1 == *iter2)37         {38             ++iter1;39             ++iter2;40         }41         if(iter1 == ivec1.end())42             cout<<"Vector1 is equal to vector2."<<endl;43         else44             cout<<"Vector1 is not equal to vector2."<<endl;45     }46     return 0;47 }