// Code derived from Stroustrup's PPP2 book
// § 4.4.2.3 for-statements
//  -and beginning on p 112

#include <iostream>

using std::cout;

// return the square of x
int square(int x) { return x * x; }

int main()
{
  for (int i = 0; i < 100; ++i) {  // for i in the [0:100) range
    cout << i << '\t' << square(i) << '\n';

    ++i;  // what's going on here? It smells like an error!
  }
}