I think the best option would be to create "input.txt" or smth similar and read input from here. You can use ifdefs or for example in CLion 2021, you can edit your configuration and read from file, without changing your code.

Use unix pipes, like ./a < a.txt.

I'm using Windows and stdout isn't always flushed only when the program exits. Sometimes if the output is a quite long, stdout might get flushed before the program exits (and I don't usually use std::endl).

Try this: setvbuf(stdout, nullptr, _IOFBF, BUFSIZ);

VS code is not fully optimized for M1, it is designed for processors from Intel. Due to the new structure of the processor, VS code may be wrong. I advise you to use Xcode, it fully works for M1

It works fine in m1 with g++-11 compiler but doesn't work with clang++. I think you need to change your default compiler in VSC. One more thing How you precompiling bits/stdc++.h in m1 its not working for me.

Based on the ideas our friends have commented on before. I found out how the following works. Although it doesn't seem to be very efficient. I created a sh file, which is named "run" like this:

a=$1;
a+=".cpp";
g++ $a -o $1;
./$1 < input.txt;

I put all input to file input.txt Now when I need to run the code, I will write to the terminal:

sh run <name_of_code_without_cpp>
// For ex:
sh run 767A

I did it because it looks like we are running python file xD Anyone has a better idea to share?