Is there a command that writes code in another program?

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I need to have a program that writes another program based on user input.
All I need is a command thats writes code, like:
writecode(code,program_name,line);
example:
writecode('disp(x+variable^2)','program.m',24);
I have not been able to find any command to help me do this and I am not sure if one exists.

采纳的回答

Image Analyst
Image Analyst 2020-4-2
fprintf() will do that.
fid = fopen('program.m', 'wt'); % Open the file for writing.
fprintf(fid, 'disp(x+variable^2)'); % Write your line of code.
fclose(fid); % Close the file.
  4 个评论
Steven Lord
Steven Lord 2020-4-2
Make sure that you write a newline to the file, either by calling fprintf to print what's returned by newline or by including \n in your format specifier:
fprintf('abc%cdef\nghi', newline)
The prompt will be printed right next to the i on the last line, since we didn't end that with a \n. I printed to the Command Window since I didn't specify a file identifier, but it works the same writing to a text file.

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