use bash to drive executable, and process stdout from the executable.

[legendbb]

Assuming I have an executable:

for (;;){
  x=getchar();
  if(x=='q') {
    printf("exit");
    exit(0);
  }
  else
    printf("Press a key");
}

How to write a script to drive this executable simulating human behavior?

For example: send 'a', 'q' and process executable stdout message (printf);

Great thanks,

A short example script is very very much appreciated.

[legendbb]

Or other tools to use in driving this executable.
Please suggest.

[Irithori]

Maybe expect will help you

man expect