1: //reverse_copy1a.cpp
3: #include <iostream>
4: #include <vector>
5: #include <algorithm>
6: using namespace std;
8: int main()
9: {
10: cout << "\nThis program illustrates the use of the STL "
11: "reverse_copy() algorithm to\nreverse the order of all, or "
12: "just some, of the values in a vector of integers\nwhile "
13: "copying the values to an output range in another vector of "
14: "integers.";
15: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
17: int a1[] = {1, 2, 3, 4, 5};
18: vector<int> v1(a1, a1+5);
20: cout << "\nHere are the values in the vector v1:\n";
21: for (vector<int>::size_type i=0; i<v1.size(); i++)
22: cout << v1.at(i) << " ";
23: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
25: int a2[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
26: vector<int> v2(a2, a2+10);
28: cout << "\nHere are the values in the vector v2:\n";
29: for (vector<int>::size_type i=0; i<v2.size(); i++)
30: cout << v2.at(i) << " ";
31: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
33: cout << "\nNow we copy all values from v1 to v2, starting at the "
34: "beginning of v2,\nand simultaneously reverse the order of the "
35: "copied values.";
36: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
38: vector<int>::iterator p;
39: p = reverse_copy(v1.begin(), v1.end(), v2.begin());
41: cout << "\nHere are the revised values in v2:\n";
42: for (vector<int>::size_type i=0; i<v2.size(); i++)
43: cout << v2.at(i) << " ";
44: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
46: cout << "\nThe iterator returned by the algorithm is pointing at "
47: "the value " << *p << ".";
48: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
50: cout << "\nNow we copy the midddle 3 of the values in v1 from v1 to "
51: "v2, starting at the\n7th value of v2, and simultaneously reverse "
52: "the order of the copied values.";
53: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
55: p = reverse_copy(v1.begin()+1, v1.end()-1, v2.begin()+6);
57: cout << "\nHere are the revised values in v2:\n";
58: for (vector<int>::size_type i=0; i<v2.size(); i++)
59: cout << v2.at(i) << " ";
60: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
62: cout << "\nThe iterator returned by the algorithm is pointing at "
63: "the value " << *p << ".";
64: cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
65: }