HELP TO RUN QBASIC CODE FROM 90s !

[musss1]

Hello everyone, I am having a hard time trying to run a code, (which I copied and pasted from a PDF text book ^^), 
The program was written in Microsoft QuickBASIC for Apple Macintosh, so i investigated a little and   
close to that i found QB64 programing languaje , i dont know if the syntax is the same, but the file (.bas), gets executed,
 
If someone can help me resolve the problem, I would appreciate it. ♥
I am leaving the link to the GitHub repository if you want to download the files and try them out yourselves.
its strange because the code is from a book, So it shouldn't be an issue ! 
I am also attaching a video with two images, showing what happens when I try to run the code completely! 

link to github :
https://github.com/musss1s/programingQBASIC.git

first image : 
The main program, calls the file "uflo.dat",which i highlighted in yellow, it stores numbers in a 21x41 array format, 
with 21 columns and each column containing 41 numbers, separated by commas. 
I = 21 and J = 41.
 
It is used to perform some calculations for sonic and subsonic flow, "gas dynamics."



second image:
i marked in red where the syntaxis problem is 


reference video:



the code should look like this :




please help !!!   thank you guys