Source_Serial_HackLab_Training

#include <stdio.h>
#include <string.h>
#define SERIAL_SIZE 100
#define SERIAL "ElHackLab\n"
int main ()
{
int count=0;
char buff [SERIAL_SIZE];

for (;;){
printf ("Ingrese el serial:");
fgets (&buff [0], SERIAL_SIZE,stdin);
if (strcmp (&buff [0], SERIAL))
printf ("Serial incorrecto - Compre el software desde http://www.sec-track.org o Intente nuevamente :P\n");
else break;
if (++count>4) return -1;
}
printf ("Serial Válido :D\n");
}