/* Conformance Test 17.14.0.1: Verification of ferror and clearerr */ #include struct S { int i; float f; char c; }; main () { struct S s [3] = { 1, 1.0, 'a', 2, 2.0, 'b', 3, 3.0, 'c' }; struct S buff [3]; FILE *f = fopen ("3/tmp", "w+b"); int i; /* Write the elements to the file. */ if (f == NULL) goto Fail1; i = fwrite ((void *) s, sizeof (struct S), 3, f); if (i != 3) goto Fail; /* Cause an error to occur. */ rewind (f); i = fread ((void *) buff, sizeof (struct S), 5, f); if (i != 3) goto Fail; i = ferror (f); if (i != 0) goto Fail; i = feof (f); if (i == 0) goto Fail; /* clear the error */ clearerr (f); i = feof (f); if (i != 0) goto Fail; i = fclose (f); /* close the file and quit */ if (i == EOF) goto Fail2; printf ("Passed Conformance Test 17.14.0.1\n"); return; Fail: printf ("Failed Conformance Test 17.14.0.1\n"); return; Fail1: printf ("Unable to open temp file for Conformance Test 17.14.0.1\n"); return; Fail2: printf ("Unable to close output file for Conformance Test 17.14.0.1\n"); return; }