#include <iostream>
#include <deque>
using namespace std;
void show(const char *msg, deque<int> q);
int main() {
deque<int> dq(10);
for(unsigned i=0; i < dq.size(); ++i) dq[i] = i*i;
show("Contents of dq: ", dq);
// Create another deque that contains a subrange of dq.
deque<int> dq2(dq.begin()+2, dq.end()-4);
// Display the contents of dq2 by using an iterator.
show("dq2 contains a subrange of dq: ", dq2);
cout << endl;
return 0;
}
// Display the contents of a deque<int>.
void show(const char *msg, deque<int> q) {
cout << msg;
for(unsigned i=0; i < q.size(); ++i)
cout << q[i] << " ";
cout << "\n";
}