why is 'c' == 'd' + 1 && 2 < 4 logical true but 'c' == 'd' - 1 && 2 < 4 logical false

I dont understand how +1 or -1 affect the result

[madhan ravi]

>> 'd'-1

ans =

    99

>> 'd'+1

ans =

   101

>> char(99)

ans =

    'c'

>> 

Answer 1

[Image Analyst]

Huh? Did you get that right?

b1 = 'c' == 'd' + 1 && 2 < 4 
b2 = 'c' == 'd' - 1 && 2 < 4 

b1 =

logical

0

b2 =

logical

1

>> doc precedence

You'll see that + and - come before == in precedence so 'd' + 1 is 'e', and 'd'-1 is 'c' so the equations become

b1 = 'c' == 'e' && 2 < 4 
b2 = 'c' == 'c' && 2 < 4 

so the first one is false && true, which is false, and the second one is true && true, which is true, just as it comes out in the command window as I showed above.

[Margarita Tomadaki]

Thank you very much for your answer it was really helpful