结构体字节对齐问题

typedef struct
{
    char c;
    int d;
    short e;
}A;


typedef struct
{
    char c;
    _int64 d;
    int e;
	A g;
	char h;
	int i;
}B;


int main(int argc, char *argv[])
{
	cout<<sizeof(B)<<endl;
    return 0;
}typedef struct
{
    char c;