Charecter to binary form

I have a character A. I converted this into a binary form(say B). I need to perform some operations using B. While doing this I need to check whether the element B(1)=1 or 0.

For doing so, I write

if B(1)==1

But it doesn't work. It works when I written like this-

if B(1)=='1'

What is the reason? Please tell me...

[Jurgen]

Apparently B is still a character array. Would help if you said how you converted it. Type whos B to see the type.

[Jan]

I do not understand, what the "binary form" of a character is. Please post the corresponding Matlab code to clear the details.

Answer 1

[Oleg Komarov]

You are comparing the char '1' with the numeric 1.

>> double('1')
ans =
    49

as in the ASCII table.

You have to rescale '1' to 1:

'1'-'0' == 1

and in your case

B(1)-'0' == 1