I cannot find the code in the folder i unzipped it using 7zip.
Please someone guide me with the steps on how to do it.
Difficult to say. What can you see?
a) A lot of other files like the "fet.exe"?
you have downloaded the incorrect file. don't sownload the executable file. download the source file.
b) only one large tar file with nearly the same name?
you must untar (unzip) that file.
be careful that you don't run into a problem like the follwing:
https://lalescu.ro/liviu/fet/forum/index.php?topic=1404.0
and
https://lalescu.ro/liviu/fet/forum/index.php?topic=1884.0