67 lines
1.1 KiB
C
67 lines
1.1 KiB
C
#include <ansidecl.h>
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#include <stdio.h>
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#include <stdlib.h>
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void
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DEFUN(write_data, (stream), FILE *stream)
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{
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int i;
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for (i=0; i<100; i++)
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fprintf (stream, "%d\n", i);
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if (ferror (stream)) {
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fprintf (stderr, "Output to stream failed.\n");
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exit (1);
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}
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}
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void
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DEFUN(read_data, (stream), FILE *stream)
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{
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int i, j;
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for (i=0; i<100; i++)
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{
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if (fscanf (stream, "%d\n", &j) != 1 || j != i)
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{
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if (ferror (stream))
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perror ("fscanf");
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puts ("Test FAILED!");
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exit (1);
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}
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}
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}
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int
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DEFUN_VOID(main)
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{
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FILE *output, *input;
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int status;
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output = popen ("/bin/cat >tstpopen.tmp", "w");
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if (output == NULL)
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{
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perror ("popen");
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puts ("Test FAILED!");
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exit (1);
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}
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write_data (output);
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status = pclose (output);
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fprintf (stderr, "pclose returned %d\n", status);
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input = fopen ("tstpopen.tmp", "r");
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if (input == NULL)
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{
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perror ("tstpopen.tmp");
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puts ("Test FAILED!");
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exit (1);
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}
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read_data (input);
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(void) fclose (input);
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puts (status ? "Test FAILED!" : "Test succeeded.");
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exit (status);
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}
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