iterating splitter

gistfile1.txt

// Example program
#include <iostream>
#include <string>

/// boost splitter is too complex
		class split_iterator
		{
		public:
			split_iterator(const std::string & ain, char ac): in(ain),c(ac),ip(0) 
			{
			    auto newip = in.find(c);
						if(newip == std::string::npos)
						{
							np = in.size()-ip;
						}
						else
						{
							np = newip-ip;
						}
			}

			split_iterator() : ip(std::string::npos),np(std::string::npos) {}

			std::string operator * () const
			{
				return in.substr(ip,np);
			}

			split_iterator &operator++()
			{
				if(ip == std::string::npos)
					return *this;
				else
				{
					ip += np+1;
					if(ip >= in.size())
					{
						ip = std::string::npos;
					}
					else
					{
						auto newip = in.find(c,ip);
						if(newip == std::string::npos)
						{
							np = in.size()-ip;
						}
						else
						{
							np = newip-ip;
						}
					}
				}
				return *this;	
			}

			bool operator != (const split_iterator & s) const 
			{
			    return !(s == *this);
		    }
		    
			bool		operator == (const split_iterator & s) const
			{
				return s.ip == ip && ip == std::string::npos;
			}

			std::string::size_type ip,np;
			std::string in;
			char c;
		};

		class splitter
		{
		public:
			splitter(const std::string aa, char ac) : a(aa),c(ac) {}
			split_iterator begin() { return split_iterator(a,c); }
			split_iterator end() { return split_iterator(); }

			std::string a;
			char c;
		};

		inline split_iterator make_split_iterator(const std::string & x, char c)
		{
			return split_iterator(x,c);
		}
		
int main()
{
  std::string name;
  std::cout << "What is your name? ";
  for(auto q : splitter("",' '))
  {
      std::cout << q << std::endl;
    }
}