Beginner Exercises: Bracketing Search

[vencent]

#include<iostream>
int main()
{
  std::cout<<"Let pc to guess.\n";
  int guess, upper=100, lower=1;
  char judge;
  while(true)
    {
      guess=(upper+lower)/2;
      std::cout<<guess<<"?(y/n) ";
      std::cin.get(judge);
      if(judge=='y'|| judge=='Y')break;
      if(judge!='n'&& judge!='N')std::cout<<"Assuming a wrong guess.\n";
      while(std::cin.get()!='\n')continue; //get rid of input                   
      std::cout<<"High(h) or Low(l)? ";
      while(true)
        {
          std::cin.get(judge);
          if(judge=='h'|| judge=='H'){upper=guess;break;}
          else if(judge=='l'||judge=='L'){lower=guess;break;}
          else std::cout<<"Only h or l accepted, again plese:";
      while(std::cin.get()!='\n')continue;
        }
      while(std::cin.get()!='\n')continue;
    }
}

This is my try for the fifth problem in beginner exercises. The problem seems ok, but I found
it is really annoying to deal with the assumed "stupid users input". Any better ideas? I am a
newbie to C++, so any comments are welcomed:)

[oldnewbie]

Not about your question,but you can use cout if you add this :

#include <......>
using namespace std; //    <--no need std::cout

int main()
{
...........
cout<<"No user no invalid input.";
.............
}

[matsom]

how to deal with stupid user inputs and/or C++ I/O in general:
1. http://www.cplusplus.com/forum/articles/6046/
2. http://www.augustcouncil.com/~tgibson/tutorial/iotips.html

[vencent]

oldnewbie, I just keep std:: to remind me those are in std. BTW, how to keep the code area smaller like yours?
Mine seems too big.
matsom, thanks for the links.

[lordmat]

Line 14 of your code has a ton of spaces which is makes the page stretch.