#include <stl.h> #include <iostream.h> #include <string.h> int main () { vector <int> v1 (3); vector <int> v2 (v1.size ()); for (int i = 0; i < v1.size (); i++) { v1[i] = i + 1; v2[i] = v1.size () - i; } ostream_iterator<int> iter (cout, " "); cout << "Inner product (sum of products) of:\n\t"; copy (v1.begin (), v1.end (), iter); cout << "\n\t"; copy (v2.begin (), v2.end (), iter); int result = inner_product (v1.begin (), v1.end (), v2.begin (), 0); cout << "\nis: " << result << endl; return 0; }