MATLAB: Can anybody help this loop question

Question

Temp = 20;
g = 0.1;
x = 0.11;
while(Temp > 0 && x ~= g)
    Temp = Temp -1
    x = x -0.001
    if(x==g)
        print('lalala')
    end
end

Running code shown above should give me a 'lalala' message in commond window at 10th loop, but I didn't get it and also it didn't break the while loop when x==g;

I added a break point inside the loop and trying to run in step, I get results in the figure below and matlab judge that x==g is logic 0 while they should equal to each other.

Can somebody help explain it?

Answer 1

Temp = 20;
g = 0.1;
x = 0.11;
while(Temp > 0 && x ~= g)
    Temp = Temp -1
    x = x -0.001
    if abs(x-g)<=10^-3
        disp('lalala')
    end
end

Read about how to compare flottant numbers.