a)
#i nclude <stdio.h>
union
{
int i;
char x[2];
}a;
void main()
{
a.x[0] = 10;
a.x[1] = 1;
printf("%d",a.i);
}
答案:266 (低位低地址,高位高地址,内存占用情况是Ox010A)
b)
main()
{
union{
int i;
struct{
char first;
char second;
}half;
}number;
number.i=0x4241;
printf("%c%c/n", number.half.first, mumber.half.second);
number.half.first='a';
number.half.second='b';
printf("%x/n", number.i);
getch();
}
答案: AB (0x41对应'A',是低位;Ox42对应'B',是高位)
6261 (number.i和number.half共用一块地址空间)