/*
 * iterators-01.cc    Standard Library, Iterators, exercise 1.
 */
#include <algorithm>
#include <iostream>
#include <string>
using namespace std;

int main()
{
   string line = "Standard Library, Iterators, exercise 1.";
   unsigned space_count = 0;

   for (unsigned i = 0; i < line.size(); i++)
   {
      if (line[i] == ' ')
	 space_count++;
   }

   cout << "space count: " << space_count << '\n';

   space_count = 0;

   for (string::const_iterator it = line.cbegin(); it != line.cend(); ++it)
   {
      if (*it == ' ')
	 space_count++;
   }

   cout << "space count: " << space_count << '\n';

   space_count = 0;

   for (const auto c : line)
   {
      if (c == ' ')
	 space_count++;
   }

   cout << "space count: " << space_count << '\n';

   cout << "space count: " << count(line.cbegin(), line.cend(), ' ') << '\n';

   return 0;
}