Error: Matrix Dimensions must agree while using char

a = 10;
b = input('My name is:  ', 's');
if b == 'Abdul'
  a = 11067;
else
  a = 11074;
end
fprintf ('My fav number is : %d ' , a)

Everything works good if I input a name or word with 5 letters, which is the same as 'Abdul' but if I input a word or name containing more letters, Matlab gives me this error:

 My name is:  fdfdfdffdfdf
Matrix dimensions must agree.
Error in rough (line 7)
if b == 'Abdul'

Please help me how I can be able to make this work regardless of the input char size. I am using MATLAB R2017a. Thank you

Answer 1

[Stalin Samuel]

use "strcmp" for comparison

a = 10;
b = input('My name is:  ', 's');
if strcmp(b,'Abdul')
  a = 11067;
else
  a = 11074;
end
fprintf ('My fav number is : %d ' , a)

[Abdul Kazi]

IT WORKED! Please can you explain me this magic

[Stalin Samuel]

Why Don't We Use == To Compare Strings In Matlab