Change the values of some of deque's elements : deque subscript indexer « deque « C++ Tutorial

1. C++ Tutorial
2. deque
3. deque subscript indexer

#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;

  // Change the values of some of dq2's elements.
  dq2[1] = 100;
  dq2[2] = 88;
  dq2[4] = 99;
  show("After the assignments, dq2 now contains: ", 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";
}