1. 下载代码:http://www.apuebook.com/code3e.html
2. 安装依赖库:sudo apt-get install libbsd-dev
3. 进入下载目录make
4. 复制头文件和动态链接库
[plain] view plaincopy
- sudo cp ./include/apue.h /usr/include/
- sudo cp ./lib/libapue.a /usr/local/lib/
- sudo cp ./lib/libapue.a /usr/lib/
[cpp] view plaincopy
- #include "apue.h"
- #include <errno.h> /* for definition of errno */
- #include <stdarg.h> /* ISO C variable aruments */
- static void err_doit(int, int, const char *, va_list);
- /*
- * Nonfatal error related to a system call.
- * Print a message and return.
- */
- void err_ret(const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- err_doit(1, errno, fmt, ap);
- va_end(ap);
- }
- /*
- * Fatal error related to a system call.
- * Print a message and terminate.
- */
- void err_sys(const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- err_doit(1, errno, fmt, ap);
- va_end(ap);
- exit(1);
- }
- /*
- * Fatal error unrelated to a system call.
- * Error code passed as explict parameter.
- * Print a message and terminate.
- */
- void err_exit(int error, const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- err_doit(1, error, fmt, ap);
- va_end(ap);
- exit(1);
- }
- /*
- * Fatal error related to a system call.
- * Print a message, dump core, and terminate.
- */
- void err_dump(const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- err_doit(1, errno, fmt, ap);
- va_end(ap);
- abort(); /* dump core and terminate */
- exit(1); /* shouldn't get here */
- }
- /*
- * Nonfatal error unrelated to a system call.
- * Print a message and return.
- */
- void err_msg(const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- err_doit(0, 0, fmt, ap);
- va_end(ap);
- }
- /*
- * Fatal error unrelated to a system call.
- * Print a message and terminate.
- */
- void err_quit(const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- err_doit(0, 0, fmt, ap);
- va_end(ap);
- exit(1);
- }
- /*
- * Print a message and return to caller.
- * Caller specifies "errnoflag".
- */
- static void err_doit(int errnoflag, int error, const char *fmt, va_list ap)
- {
- char buf[MAXLINE];
- vsnprintf(buf, MAXLINE, fmt, ap);
- if (errnoflag)
- snprintf(buf+strlen(buf), MAXLINE-strlen(buf), ": %s",
- strerror(error));
- strcat(buf, "\n");
- fflush(stdout); /* in case stdout and stderr are the same */
- fputs(buf, stderr);
- fflush(NULL); /* flushes all stdio output streams */
- }
6. 注销,重启
7. 代码文件
[cpp] view plaincopy
- #include "apue.h"
- #include "error.h"