How to wait and READ char from stdin without waiting?

Question

Hello There is a file where I draw picture using a loop. I want to exit loop when 'q' button is pressed. But I want the program is running during it is waiting 'q'. How to implement this behavior? I tried using system("stty -icanon min 1") but in this case program WAITS any char between loops. When ("stty -icanon min 0") the program doesn't read from stdin and terminal pushes all accumulated pressed buttons into stdout after finishing program Strings with loop in game.c file are: from 32 to 43. Thank in advance. Look at game.c file.

Answer 1

termios + unistd libraries helped me.

2nd way is ncurses library with its embedded function of parallel input.