Hello,
usually is good to make your project simple as can or make an example based on it (when you not want to share your job), where the issues occur. Then others can try the code and try reproduced your issue, but this is not possible with a picture.
However my bet is missing \n in printfs. Your code probably works, but the printf without \n block the output to console. I don’t know if exist another solution, but try to add fflush(stdout); after printfs without \n.
BR, Jan