1*4882a593Smuzhiyun #include <stdio.h>
2*4882a593Smuzhiyun #include <stdlib.h>
3*4882a593Smuzhiyun #include <string.h>
4*4882a593Smuzhiyun #include <unistd.h>
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #ifndef BUFSIZ
7*4882a593Smuzhiyun # define BUFSIZ 4096
8*4882a593Smuzhiyun #endif
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #undef BUFSIZ
11*4882a593Smuzhiyun # define BUFSIZ 64
main(void)12*4882a593Smuzhiyun int main (void)
13*4882a593Smuzhiyun {
14*4882a593Smuzhiyun short ibuff[BUFSIZ], obuff[BUFSIZ];
15*4882a593Smuzhiyun int rc, i, len;
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun while ((rc = read (0, ibuff, sizeof (ibuff))) > 0) {
18*4882a593Smuzhiyun memset (obuff, 0, sizeof (obuff));
19*4882a593Smuzhiyun for (i = 0; i < (rc + 1) / 2; i++) {
20*4882a593Smuzhiyun obuff[i] = ibuff[i ^ 1];
21*4882a593Smuzhiyun }
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun len = (rc + 1) & ~1;
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun if (write (1, obuff, len) != len) {
26*4882a593Smuzhiyun perror ("read error");
27*4882a593Smuzhiyun return (EXIT_FAILURE);
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun memset (ibuff, 0, sizeof (ibuff));
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun if (rc < 0) {
34*4882a593Smuzhiyun perror ("read error");
35*4882a593Smuzhiyun return (EXIT_FAILURE);
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun return (EXIT_SUCCESS);
38*4882a593Smuzhiyun }
39