How can I get a desired input? Also, why does 1 = 49 and 2 = 50 etc. Anyway to keep there values?

I want someone to enter a 6 digit student number and get the sum of the digits.

What I have so far:

disp('Enter your student number:','s');

if N>0

disp('Sum of digits:')

disp(sum(num2str(N)))

end

Answer 1

[Azzi Abdelmalek]

N=input('Enter your student number:');
if N>0
  disp('Sum of digits:')
  disp(sum(num2str(N)-'0'))
end

[Kristian]

disp('Enter your student number:');

N = '123456'

disp('Sum of digits:')

disp(sum(num2str(N))- 6*48 )

Got this and it works, but how do I get someone to input the value and make sure the values are not ascii.

[Image Analyst]

They are not entering ASCII values - they're entering the regular characters, but computers deal with numbers so they have to have a number that represents your letters. So '0' is 48 and '1' is 49 and so on. To get 0, 1, etc. you have to subtract 48, which is '0' (which it converts into 48 which is the ASCII value of the character zero).