clc;
input('think of a number from 0 to 100,000\n');
clc;
n=1;
xmin=0;
xmax=10;
guess=(xmax-xmin)./2;
final=-1;

while final==-1;
    guess=(xmax+xmin)./2;
    fix guess;
    if xmin==xmax
        final=guess;
        clc;
        fprintf('your number is %1.f \n',final);
    end
    fprintf('my guess is %1.f \n',guess)
    ask1=input('is my guess correct? 1 for yes, 0 for no\n');
    if ask1==1
        final=guess;
        clc;
        fprintf('your number is %1.f \n',final);
        break
    else
        clc;
        fprintf('my guess is %1.f \n',guess)
    end
    ask2=input('is your number greater than my guess? 1 for yes, 0 for no \n');
    clc;
    if ask2==0
        xmax=guess;
    else
        xmin=guess;
    end
    n=n+1;
end

fprintf('iterations= %1.f \n',n);