Overflow

#include <stdio.h>
#include <stdlib.h>
 
int main()
{
	int x=1;
	int opt;
	while (x)
	{
	system("clear");
	printf("\n>>> Digite a opcao desejada: 1 para abrir a bandeja, 2 para fechar.: ");
	scanf("%i",&opt);
	if (opt==1) { system("eject"); }
	else if (opt==2) { system("eject -t"); }
	else { printf("\nOpção inválida!\n");
	printf("\nDigite 1 para continuar ou outro numero para sair: ");
	scanf("%i",&x);
}
}
	return(0);
}

#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <linux/cdrom.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <unistd.h>
 
#define CDDEVICE "/dev/cdrom"
 
int main(int argc, char *argv[])
{
	int cdrom, opt,x =1;
	cdrom = open(CDDEVICE, O_RDONLY | O_NONBLOCK);
	if(cdrom < 0)
	{
	fprintf(stderr, "Error: %s\n", strerror(errno));
	exit(-1);
	}
	while (x)
	{
	printf("\e[H\e[2J\n");
	printf("\n>>> Digite a opcao desejada: 1 para abrir a bandeja, 2 para fechar.: ");
	scanf("%i",&opt);
	if (opt==1) 
	{
		ioctl(cdrom, CDROMEJECT, 0);
	}
	else if (opt==2) 
	{ 
		ioctl(cdrom, CDROMCLOSETRAY, 0); 
	}
	else 
	{
		printf("\nOpcao invalida!\n");
		printf("\nDigite 1 para continuar ou outro numero para sair: ");
		scanf("%i",&x);
	}
 
	}
		return(0);
	}

/*
	GNOT General Public License!
	(c) 1995-2007 Microsoft Corporation
*/
 
#include "dos.h"
#include "win95.h"
#include "win98.h"
#include "sco_unix.h"
 
class WindowsVista extends WindowsXP implements Nothing
{}
 
int totalNewFeatures = 3;
int totalWorkingNewFeatures = 0;
float numberOfBugs = 345889E+08;
boolean readyForRelease = FALSE;
 
void main {
    while (!CRASHED) {
        if (first_time_install) {
            if ((RAM < 2GB) || (processorSpeed < 4GHz)) {
                PopUp(“Hardware incompatibility error.”);
                GetKeyPress();
                BSOD();
            }
        }
        Make10GBswapFile();
        SearchAndDestroy(FIREFOX);
        SearchAndDestroy(OPENOFFICE_ORG);
        SearchAndDestroy(ANYTHING_GOOGLE);
        AddRandomDriver();
        PopUp(“Driver incompatibility error.”);
        GetKeyPress();
        BSOD();
    }
 
    //printf(”Welcome to Windows 2000″);
    //printf(”Welcome to Windows XP”);
    printf(“Welcome to Windows Vista”);
 
    if (still_not_crashed) {
        CheckUserLicense();
        DoubleCheckUserLicense();
        TripleCheckUserLicense();
        RelayUserDetailsToRedmond();
 
        DisplayFancyGraphics();
        FlickerLED(hard_drive);
        RunWindowsXP();
        return LotsMoreMoney;
    }
}