Can any1 give some hints for this thanks

I have figured out how to round random numbers to nearest specific numbers. But i can't seem to figure out how to load a file with grades and then do the rounding, instead of creating random grades myself and then do the rounding?

My function looks like this atm:

function gradesRounded = roundGrade(grades)

      %data0=load(filename);
      A = readtable('grades');

      gradeskala = [-3 0 2 7 10 12];
      N = [0.1 2.2 1.6 7.3 10 -1.5];

      NRounded = interp1(gradeskala,gradeskala,N,'nearest')

end

The task is this:

%

Answer 1

[Image Analyst]

Do File->New. Then type in a bunch of numbers and save it to a disk file. then read it in with something like dlmread() or importdata().