apue.2e.fig1.4.c

apue.2e.fig1.4.c

#include "apue.h"

#define BUFFSIZE        4096

int main()
{
        int n;
        char buf[BUFFSIZE];

        while ((n = read(STDIN_FILENO, buf, BUFFSIZE)) > 0)
        {
                if (write(STDOUT_FILENO, buf, n) != n)
                {
                        err_sys("write error");
                }
        }

        if (n < 0 )
        {
                err_sys("read error");
        }

        return 0;
}