Entering and exiting raw mode is now working perfectly.

tte.c

@@ -1,7 +1,87 @@
+/*** Include section ***/
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <termios.h>
 #include <unistd.h>
 
+/*** Data section ***/
+
+struct termios orig_termios;
+
+/*** Terminal section ***/
+
+void die(const char* s) {
+	// perror looks for global errno variable and then prints
+	// a descriptive error mesage for it.
+	perror(s);
+	exit(1);
+}
+
+void disableRawMode() {
+	if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &orig_termios) == -1)
+		die("Failed to disable raw mode");
+}
+
+void enableRawMode() {
+	// Save original terminal state into orig_termios.
+	if (tcgetattr(STDIN_FILENO, &orig_termios) == -1)
+		die("Failed to get current terminal state");
+	// At exit, restore the original state.
+	atexit(disableRawMode);
+
+	// Modify the original state to enter in raw mode.
+	struct termios raw = orig_termios;
+	// This disables Ctrl-M, Ctrl-S and Ctrl-Q commands.
+	// (BRKINT, INPCK and ISTRIP are not estrictly mandatory,
+	// but it is recommended to turn them off in case any
+	// system needs it).
+	raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
+	// Turning off all output processing (\r\n).
+	raw.c_oflag &= ~(OPOST);
+	// Setting character size to 8 bits per byte (it should be
+	// like that on most systems, but whatever).
+	raw.c_cflag |= (CS8);
+	// Using NOT operator on ECHO | ICANON | IEXTEN | ISIG and  
+	// then bitwise-AND them with flags field in order to 
+	// force c_lflag 4th bit to become 0. This disables 
+	// chars being printed (ECHO) and let us turn off 
+	// canonical mode in order to read input byte-by-byte 
+	// instead of line-by-line (ICANON), ISIG disables
+	// Ctrl-C command and IEXTEN the Ctrl-V one.
+	raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
+	// read() function now returns as soon as there is any
+	// input to be read.
+	raw.c_cc[VMIN] = 0;
+	// Forcing read() function to return every 1/10 of a 
+	// second if there is nothing to read.
+	raw.c_cc[VTIME] = 1;
+
+	if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw) == -1)
+		die("Failed to set raw mode");
+}
+
+/*** Init section ***/
+
 int main() {
-	char c;
-	while (read(STDIN_FILENO, &c, 1) == 1);
+	enableRawMode();
+
+	while (1) {
+		char c = '\0';
+		// Ignoring EAGAIN to make it work on Cygwin.
+		if (read(STDIN_FILENO, &c, 1) == -1 && errno != EAGAIN)
+			die("Error reading input");
+
+		if (isprint(c))
+			printf("%d ('%c')\r\n", c, c);
+		else
+			printf("%d\n\r", c);
+
+		if (c == 'q')
+			break;
+	}
+
 	return 0;
 }