parse test

/*
just another simple e-mail parse
author: Cooler_
contact: c00f3r [at] gmail [dot] com

*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// return reverse string
char *strrev(char *str);

int
main()
{
 static char *domain="@gmail.com";
 static char *s="lol blah blablablabla [email protected] bha bla [email protected] a aas  blah blah";
 char *words=(char *)malloc(sizeof(char)*1024);
 char *email=(char *)malloc(sizeof(char)*1024);
 int x=0,z=0;

 domain=strrev(domain);

// separa uma palavra por linha
  do{
   if(*s==' ')
   {
    words=strrev(words);
    *(words+x)='\n';
    while( *(domain+z)==*(words+z) && z!=strlen(domain))
     z++;
    if(z==strlen(domain))
     email=strrev(words);

    memset(words,1,x);
    x=0;
    z=0;
   } else
    *(words+x)=*s;
   x++;
   s++;
  }while(*s != '\0');


 puts(email);

 free(words);
 free(email);

 return 0;
}


// return reverse string
char
*strrev(char *str)
{
 char *p1, *p2;

 if(! str || ! *str)
  return str;
 for(p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2)
 {
  *p1 ^= *p2;
  *p2 ^= *p1;
  *p1 ^= *p2;
 }
 return str;
}