Using codegen for reading data from a text file in C

6 views (last 30 days)
I'm trying to write a code that reads numeric data from a text file and stores it in an array. Eventually, the code should be compiled as an '.exe' file using codegen. The problem is that C programming does not support "obvious" functions that can help me do it, such as fgets or str2num. Can anyone help me write a Matlab code that can eventually be compiled? The format of the data text file is mine to decide.
Kevin Chng
Kevin Chng on 3 Sep 2018
Edited: Kevin Chng on 3 Sep 2018
Okay, just realised that I see his question wrongly.

Sign in to comment.

Accepted Answer

Yuval Geyari
Yuval Geyari on 3 Sep 2018
Thanks everyone, I solved the issue by using the functions strtok and str2double, which are supported by C programming.

More Answers (1)

Walter Roberson
Walter Roberson on 3 Sep 2018
You should almost certainly be able to use anything in the standard C library, including sscanf, if you invoke it by coder.ceval or coder.extrinsic.
Now, there is the issue that the standard C library has no file system support. fgets is not truly part of C: it is an operating system function such as might be defined by POSIX.
This basically means that if you are writing a C program for deployment running a literal toaster, that it is not at all an error that the compiler does not permit you to access files. Or more modernly, it is not at all an error that your arduino does not support files. Raspberry Pi is a hosted implementation and does support files, but that is outside of C proper.


Find more on MATLAB Code Analysis in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by