root@HelloWorld:/C# gcc -o PrintPID.out PrintPID.c PrintPID.c:3: error: expected ‘;’, ‘,’ or ‘)’ before ‘{’ token root@HelloWorld:/C#
---------------------------------------------------------------------------------------------------------------------------------------------------------------- PrintPID.c如下: #include "apue.h" int main(void) { printf("Hello world from process ID %d\n", getpid()); exit(0); } ---------------------------------------------------------------------------------------------------------------------------------------------------------------- apue.h如下:
#ifndef _APUE_H #define _APUE_H
#define _XOPEN_SOURCE 600
#include <sys/types.h>//Some systems still require this #include <sys/stat.h> #include <sys/termios.h>//for winsize #ifndef TIOCGWINSZ #include <sys/ioctl.h> #endif #include <stdio.h>//For convenience #include <stdlib.h>//For convenience #include <stddef.h>//For offsetof #include <string.h>//For convenience #include <unistd.h>//For convenience #define MAXLINE 4096//Max line length /* *Default file access permissions for new files. */ #define FILE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) /* *Default permissions for new directories. */ #define DIR_MODE (FILE_MODE | S_IXUSR | S_IXGRP | S_IXOTH) typedef void Sigfunc(int);//For signal handlers
#if defined(SIG_IGN) && !defined(SIG_ERR) #define SIG_ERR((Sigfunc *)-1)
#endif
#define min(a,b) ((a)<(b) ? (a) : (b)) #define max(a,b) ((a)>(b) ? (a) : (b))
/* *Prototypes for our own functions */ char *path_alloc(int *); long open_max(void); void set_fl(int, int); void clr_fl(int, int); void pr_exit(int); void pr_mask(const char*); Sigfunc *signal_intr(int, Sigfunc *);
int tty_cbreak(int); int tty_raw(int); int tty_reset(int); void tty_atexit(void); #ifdef ECHO //Only if<termios.h>has bee include struct termios *tty_termios(void); #endif
void sleep_us(unsigned int); ssize_t readn(int, void *, size_t); ssize_t writen(int, const void *, size_t); void daemonize(const char *);
int s_pipe(int *); int recv_fd(int, ssize_t (*func)(int, const void *, size_t));
int send_fd(int, int); int send_err(int, int, const char*);
int serv_listen(const char*); int serv_accept(int, uid_t*); int cli_conn(const char*); int buf_args(char *, int (*func)(int, char **);
int ptym_open(char *, int); int ptys_open(char *); #ifdef TIOCGWINSZ pid_t pty_fork(int *, char *, int, const struct termios *, const struct winsize *); #endif
int lock_reg(int, int, int, off_t, int, off_t); #define read_lock(fd, offset, whence, len)\ lock_reg((fd), F_SETLK, F_RDLCK, (offset), (whence), (len)) #define readw_lock(fd, offset, whence, len)\ lock_reg((fd), F_SETLKW, F_DLCK, (offset), (whence), (len)) #define writ_lock(fd, offset, whence, len)\ lock_reg((fd), F_SETLK, F_RDLCK, (offset), (whence), (len)) #define writw_lock(fd, offset, whence, len)\ lock_reg((fd), F_SETLKW, F_DLCK, (offset), (whence), (len)) #define un_lock(fd, offset, whence, len)\lock_reg((fd), F_SETLK, F_UNLCK, (offset), (whence), (len))
pid_t lock_test(int, int, off_t, int, off_t);
#define is_read_lockable(fd, offset, whence, len)\ (lock_test((fd), F_RDLCK, (offset), (whence), (len)) == 0) #define is_write_lockable(fd, offset, whence, len)\ (lock_test((fd), F_WRLCK, (offset), (whence), (len)) == 0)
void err_dump(const char *, ...); void err_msg(const char*, ...); void err_quit(const char*, ...); void err_exit(int, const char *,...); void err_ret(const char *, ... ); void err_sys(const char *, ... );
void log_msg(const char *, ... ); void log_open(const char *, int, int); void log_quit(const char *, ... ); void log_ret(const char *, ... ); void log_sys(const char *, ...);
void TELL_WAIT(void); void TELL_PARENT(pid_t); void TELL_CHILD(pid_t); void WAIT_PARENT(void); void WAIT_CHILD(void);
#endif //_APUE_H
------------------------------------------------------------------------------------------------------------------------------------------------------------------ 这个程序是在《UNIX环境高级编程》上的,怎么每次都是错误呢? 当我在int main(void)后加上“;”后,即int main(void);却提示PrintPID.c:3: error: expected declaration specifiers or ‘...’ before ‘{’ token
怎么回事?
_________________ 我很乖的。。。
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