{ 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); } }

int main (void) { FILE *output;

output = popen ("more", "w"); if (!output) { fprintf (stderr, "Could not run more.\n"); return EXIT_FAILURE; } write_data (output); pclose (output); return EXIT_SUCCESS; }

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