Not eXactly C line following code

gistfile1.c

/******************** Line Follow ********************/

task LineFollow()
{
	OnFwd(L_MOTOR, POWER);
	while(true)
	{
		if(SENSOR_A_BLACK)
		{
			if(SENSOR_B_WHITE)
			{
				Off(L_MOTOR);
				OnFwd(R_MOTOR, POWER);
			}
			else Drive(); // Double black (on the line or on a green square)
		}

		if(SENSOR_A_WHITE)
		{
			if(SENSOR_B_BLACK) {
				Off(R_MOTOR);
				OnFwd(L_MOTOR, POWER);
			}
			else // Double white (shouldn't happen)
		}
	}
}