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#include <stdio.h>
typedef char padding[16];
struct {
padding p1;
char v;
padding p2;
} padding_char;
struct {
padding p1;
short v;
padding p2;
} padding_short;
struct {
padding p1;
int v;
padding p2;
} padding_int;
struct {
padding p1;
long v;
padding p2;
} padding_long;
struct {
padding p1;
long long v;
padding p2;
} padding_long_long;
struct {
padding p1;
float v;
padding p2;
} padding_float;
struct {
padding p1;
double v;
padding p2;
} padding_double;
struct {
padding p1;
long double v;
padding p2;
} padding_long_double;
static void
fill (void *buf, long sizeof_buf)
{
char *p = buf;
int i;
for (i = 0; i < sizeof_buf; i++)
p[i] = "The quick brown dingo jumped over the layzy dog."[i];
}
void
fill_structs (void)
{
fill (&padding_char.p1, sizeof (padding));
fill (&padding_char.v, sizeof (padding_char.v));
fill (&padding_char.p2, sizeof (padding));
fill (&padding_short.p1, sizeof (padding));
fill (&padding_short.v, sizeof (padding_short.v));
fill (&padding_short.p2, sizeof (padding));
fill (&padding_int.p1, sizeof (padding));
fill (&padding_int.v, sizeof (padding_int.v));
fill (&padding_int.p2, sizeof (padding));
fill (&padding_long.p1, sizeof (padding));
fill (&padding_long.v, sizeof (padding_long.v));
fill (&padding_long.p2, sizeof (padding));
fill (&padding_long_long.p1, sizeof (padding));
fill (&padding_long_long.v, sizeof (padding_long_long.v));
fill (&padding_long_long.p2, sizeof (padding));
fill (&padding_float.p1, sizeof (padding));
fill (&padding_float.v, sizeof (padding_float.v));
fill (&padding_float.p2, sizeof (padding));
fill (&padding_double.p1, sizeof (padding));
fill (&padding_double.v, sizeof (padding_double.v));
fill (&padding_double.p2, sizeof (padding));
fill (&padding_long_double.p1, sizeof (padding));
fill (&padding_long_double.v, sizeof (padding_long_double.v));
fill (&padding_long_double.p2, sizeof (padding));
}
int
main ()
{
fill_structs ();
printf ("sizeof (char) == %d\n", (int) sizeof (char));
printf ("sizeof (short) == %d\n", (int) sizeof (short));
printf ("sizeof (int) == %d\n", (int) sizeof (int));
printf ("sizeof (long) == %d\n", (int) sizeof (long));
printf ("sizeof (long long) == %d\n", (int) sizeof (long long));
printf ("sizeof (void *) == %d\n", (int) sizeof (void*));
printf ("sizeof (void (*)(void)) == %d\n", (int) sizeof (void (*)(void)));
printf ("sizeof (float) == %d\n", (int) sizeof (float));
printf ("sizeof (double) == %d\n", (int) sizeof (double));
printf ("sizeof (long double) == %d\n", (int) sizeof (long double));
/* Signed char? */
printf ("valueof ('\\377') == %d\n", '\377');
printf ("valueof ((int) (char) -1) == %d\n", (int) (char) -1);
printf ("valueof ((int) (signed char) -1) == %d\n", (int) (signed char) -1);
printf ("valueof ((int) (unsigned char) -1) == %d\n", (int) (unsigned char) -1);
return 0;
}
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