24.

union a {
	int a_int1;
	double a_double;
	int a_int2;
};
typedef struct
{
	a a1;
	char y;
} b;
class c
{
	double c_double;
	b b1;
	a a2;
};

输出cout<<sizeof(c)<<endl;的结果?

答:

VC6环境下得出的结果是32

另:

我(sun)在VC6.0+win2k下做过试验:

short - 2

int-4

float-4

double-8

指针-4

sizeof(union)，以结构里面size最大的为union的size

 -----------------------------------------------------------------------------

25.i最后等于多少?

int i = 1;
int j = i++;
if((i>j++) && (i++ == j)) 
	i+=j;

答:

i = 5

---------------------------------------------------------------------

26.

unsigned short array[]={1,2,3,4,5,6,7};

int i = 3;

*(array + i) = ?

答:

4

---------------------------------------------------------------------