title: Reading a list of integer in a single input line in C++
body: <p>I'm trying to read multiple integers from a single input line into an array
  eg. Input: 100 200 300 400, so the array is: a[0] = 100, a[1] = 200, a[2] = 300, a[3] = 400
  The thing is, the number of integers are unknown, so the size of the array is unknown.</p>