diff options
Diffstat (limited to 'manual/examples/popen.c')
| -rw-r--r-- | manual/examples/popen.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/manual/examples/popen.c b/manual/examples/popen.c index 16ae32fa16..1b9ee826b4 100644 --- a/manual/examples/popen.c +++ b/manual/examples/popen.c @@ -1,7 +1,7 @@ #include <stdio.h> #include <stdlib.h> -void +void write_data (FILE * stream) { int i; @@ -23,11 +23,16 @@ main (void) output = popen ("more", "w"); if (!output) { - fprintf (stderr, "Could not run more.\n"); + fprintf (stderr, + "incorrect parameters or too many files.\n"); return EXIT_FAILURE; } write_data (output); - pclose (output); + if (pclose (output) != 0) + { + fprintf (stderr, + "Could not run more or other error.\n"); + } return EXIT_SUCCESS; } /*@end group*/ |