Something

char    *parser(char *str)
{
  char  *tab;

  *tab = malloc(my_strlen(str) + 1);
  my_strcpy(tab, str);
  return (tab);
}

int     main()
{
  // char       *osef;
  //*osef = malloc(90);
  //osef = parser("David le g4m3rZ")[3];
  my_putchar(parser("David le g4m3rZ")[14]);
}