?? f-21-19-4.c
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#include <stdio.h>struct sss{ int i1:21; int i2:19; int i3:4;};static union u{ struct sss sss; unsigned char a[sizeof (struct sss)];} u;int main (void) { int i; for (i = 0; i < sizeof (struct sss); i++) u.a[i] = 0; u.sss.i1 = 2097151.0; for (i = 0; i < sizeof (struct sss); i++) printf ("%x ", u.a[i]); printf ("\n"); u.sss.i2 = 524287.0; for (i = 0; i < sizeof (struct sss); i++) printf ("%x ", u.a[i]); printf ("\n"); u.sss.i3 = 15.0; for (i = 0; i < sizeof (struct sss); i++) printf ("%x ", u.a[i]); printf ("\n"); return 0;}?? 快捷鍵說明
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