MATLAB: Didn’t I get “Hello” word by running following script? if I change the value in if loop except 13.2 it gives me correct answer.

Question

clc
display('code executing');
for number=1:0.1:15
    if number == 13.2
        disp('Hello');
    end 
end

Answer 1

clc
tol = 10^-3 ;
display('code executing');
for number=1:0.1:15
    if abs(number-13.2)<=tol
        disp('Hello');
    end 
end

You should not compare flottant numbers using ==..you should subtract and check is the absolute value of difference is less then a specified tolerance.