78 lines
1.7 KiB
C++
78 lines
1.7 KiB
C++
/* Conformance Test 17.13.0.1: Verification of fread and fwrite */
|
|
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
|
|
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;
|
|
|
|
|
|
/* Read the elements from the file. */
|
|
|
|
rewind (f);
|
|
i = fread ((void *) buff, sizeof (struct S), 3, f);
|
|
if (i != 3)
|
|
goto Fail;
|
|
if ((s [0].i != 1) || (s [1].i != 2) || (s [2].i != 3))
|
|
goto Fail;
|
|
if ((fabs(s [0].f - 1.0) > 0.00001) || (fabs(s [1].f - 2.0) > 0.00001) ||
|
|
(fabs(s [2].f - 3.0) > 0.00001))
|
|
goto Fail;
|
|
if ((s [0].c != 'a') || (s [1].c != 'b') || (s [2].c != 'c'))
|
|
goto Fail;
|
|
|
|
|
|
/* Ensure that a count or element_size of 0 causes no chars to be written. */
|
|
|
|
i = fwrite ((void *) s, sizeof (struct S), 0, f);
|
|
if (i != 0)
|
|
goto Fail;
|
|
i = fwrite ((void *) s, 0, 2, f);
|
|
if (i != 2)
|
|
goto Fail;
|
|
rewind (f);
|
|
i = fread ((void *) s, sizeof (struct S), 0, f);
|
|
if (i != 0)
|
|
goto Fail;
|
|
i = fread ((void *) s, 0, 2, f);
|
|
if (i != 0)
|
|
goto Fail;
|
|
|
|
|
|
i = fclose (f); /* close the file and quit */
|
|
if (i == EOF)
|
|
goto Fail2;
|
|
|
|
printf ("Passed Conformance Test 17.13.0.1\n");
|
|
return;
|
|
|
|
Fail:
|
|
printf ("Failed Conformance Test 17.13.0.1\n");
|
|
return;
|
|
|
|
Fail1:
|
|
printf ("Unable to open temp file for Conformance Test 17.13.0.1\n");
|
|
return;
|
|
|
|
Fail2:
|
|
printf ("Unable to close output file for Conformance Test 17.13.0.1\n");
|
|
return;
|
|
}
|