int main(){	int value = 0;	while (cin >> value )	{		//This is where you''d parse the value and 				//determine what is to be done with a valid		//command.  In this example I''m just		//outputting the value to the screen.		cout << value << endl;		if ( value == 0 )			break;	}	return 0;}  

    #include <unistd.h>#include <sys/time.h>#include <sys/types.h>#include <stdio.h>int main( void ){        fd_set rfds;        struct timeval tv;        int retval;        //256 is the longest length input string we'll take and the plus one        //is for the null terminator on the end \0        char inputString[256 + 1];        bool keepLooping = true;        //This sets us up to watch standard in (fd 0) to see when it has input        //data.        FD_ZERO(&rfds);        FD_SET(0, &rfds);        //Wait for up to 1 second for user input.        tv.tv_sec = 1;        tv.tv_usec = 0;	//main game loop        while ( keepLooping )        {                ret_val = select( 1, &rfds, NULL, NULL, &tv );                if (ret_val)                {                        //There is data on the file descriptor,                        //better collect it.                        fgets(inputString,257,stdin);                        //Now lets process the data the user                        //entered and check to see if we're to                        //end the game.                        keepLooping = parseInputString( inputString, 257 );                }                //Do other game processing;                UpdateMap();		EnemyAI();                MoveMonsters();                CheckTime();                //etc        }}bool parseInputString( char *, int size ){        if( strcmp( inputString, "S" ) == 0 ||                strcmp( inputString, "s" ) == 0 )        {                SaveGame();        }        else if( strcmp( inputString, "Q" ))        {                //End the game                return false;        }        else        {                //Look for other input                ;        }        return true;}