1¡£¸ø¶¨ÏÂÃæµÄ´úÂë:
class Graph{
public:
Graph() { s_gCount++; }
virtual ~Graph() { s_gCount¨C;}
virtual int drawOut() = 0;
static int getTotalCount() { return s_gCount; }
protected:
int m_x;
int m_y;
static int s_gCount;
};
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2¡£¸ø¶¨ÏÂÃæµÄ´úÂë:
class A
{
int a;
};
class AA : public A
{
int aa;
};
class X : public virtual A
{
int x;
};
class Y : public virtual A
{
int y;
};
class Z : public X, public Y {
int z;
};
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3¡£¸ø¶¨ÏÂÃæ´úÂë:
#include
#include
typedef struct _AAA
{
int a;
}AAA, *PAAA;
class CAAA
{
public:
CAAA() { m_a.a = 0; }
CAAA(CAAA& in) { printf(¡±CAAA(CAAA& in)\n¡±); }
CAAA(AAA in) { printf(¡±CAAA(AAA in)\n¡±); }
CAAA(int in) { printf(¡±CAAA(int in)\n¡±); }
private:
AAA m_a;
public:
operator PAAA ()
{
return &m_a;
}
};
void test0(PAAA pa)
{
printf(¡±test0\n¡±);
}
void test1(CAAA ca)
{
printf(¡±test1\n¡±);
}
void test2(CAAA ca)
{
printf (¡±test2\n¡±);
}
void main(void)
{
CAAA a;
test0 (a);
AAA b;
test1 (b);
int i=0;
test2 (i);
}
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