Something

#include <fcntl.h>void   read_stdin(int   octets){  char *stock;  int   fd;  int   tmp;  stock = malloc(sizeof(*stock)*octets);  fd = read(0, stock, octets);  if (fd == -1)    {      write(2, "Error1", 6);    }  tmp = write(1, stock, octets);  if (tmp == -1)    write(2, "Error2", 6);}void    read_data(int nombre, char *fichier){  char  *stock;  int   fd;  int   fd2;  int   fd3;  stock = malloc(sizeof(*stock)*nombre);  fd = open(fichier, O_RDONLY, 0);  if (fd)    read(fd, stock, nombre);  else    write(2, "Error4", 6);  fd2 =  write(1, stock, nombre);  if (fd2 == -1)    write(2, "Error5", 6);  fd3 =  close(fd);  if (fd3 == -1)    write(2, "Error6", 6);}int     main(int argc, char **argv){  if (argc > 0)    {      if (argv[2])        read_data(my_getnbr(argv[1]), argv[2]);      if (!argv[2])        read_stdin(my_getnbr(argv[1]));    }  return (0) ;}