How do I read only numerical data and ignore other text from input file?

Input file looks like this. Is there a way to ignore the specifiers? Is there a way the program allocates variables as given in the file?

0, 1 !t0, y0
1 !tf
0.1 !h
1 !Euler Forward

[Jan]

It would be helpful, if you explain what you expect as output.

[Siddharth Sharma]

Hi, these numbers are to be allotted to the variables next to the exclamation sign. This is just the input, I don't think the output matters but anyway, my code is supposed to numerically solve ODEs so the program will use Runge-Kutta 4th order algorithm(written in the code).

Answer 1

[Akira Agata]

Is this what you would like to do?

% After textscan
C = {'0, 1 !t0, y0';...
  '1 !tf';...
  '0.1 !h';...
  '1 !Euler Forward'};

% Extract numbers and store them in variables for each line
tmp = regexp(C{1},'[+-]?(\d+\.?\d*|\.\d+)','match');
t0 = str2double(tmp{1});
y0 = str2double(tmp{2});

tmp = regexp(C{2},'[+-]?(\d+\.?\d*|\.\d+)','match');
tf = str2double(tmp{1});

tmp = regexp(C{3},'[+-]?(\d+\.?\d*|\.\d+)','match');
h = str2double(tmp{1});

tmp = regexp(C{4},'[+-]?(\d+\.?\d*|\.\d+)','match');
EulerForward = str2double(tmp{1});

[Walter Roberson]

I think the idea was to parse the strings to automatically figure out the variable names.