cbreak, nocbreak, noraw, raw - input mode control functions
#include <curses.h> int cbreak(void); int nocbreak(void); int noraw(void); int raw(void);
The cbreak() function sets the input mode for the current terminal to cbreak mode and overrides a call to raw().The nocbreak() function sets the input mode for the current terminal to Cooked Mode without changing the state of ISIG and IXON.
The noraw() function sets the input mode for the current terminal to Cooked Mode and sets the ISIG and IXON flags.
The raw() function sets the input mode for the current terminal to Raw Mode.
Upon successful completion, these functions return OK. Otherwise, they return ERR.
No errors are defined.
If the application is not certain what the input mode of the process was at the time it called initscr(), it should use these functions to specify the desired input mode.
Input Mode , <curses.h>, XBD specification, General Terminal Interface .