| #include <stdio.h> |
| #include <stdlib.h> |
| |
| void |
| write_data (FILE * stream) |
| { |
| int i; |
| for (i = 0; i < 100; i++) |
| fprintf (stream, "%d\n", i); |
| if (ferror (stream)) |
| { |
| fprintf (stderr, "Output to stream failed.\n"); |
| exit (EXIT_FAILURE); |
| } |
| } |
| |
| /*@group*/ |
| int |
| main (void) |
| { |
| FILE *output; |
| |
| output = popen ("more", "w"); |
| if (!output) |
| { |
| fprintf (stderr, |
| "incorrect parameters or too many files.\n"); |
| return EXIT_FAILURE; |
| } |
| write_data (output); |
| if (pclose (output) != 0) |
| { |
| fprintf (stderr, |
| "Could not run more or other error.\n"); |
| } |
| return EXIT_SUCCESS; |
| } |
| /*@end group*/ |