I typed a wrong question. The actula question is$(15$p$)$ Write a Matlab$/$Octave script that reads an integer from the user and computes the sum

of the digits of this integer. The sum should be written on the screen. $($Example: If $n$ is $5879,$ the

script should display $29($the digits of $5879$ is $5,8,7,9$ and the sum is $5+8+7+9=29)).$