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class A{ int a; protected: int b; public: }; int c; class C: A{ int g;protec ted: int h;publ ic: int i;}; class D: B, C int j;protec ted: B ::b; int k;priva te: }; int n;class B: protected A{ int d; protected: int e; public: A::c; }; int f;

Èý. Ö¸³ömainÖÐÿÐеÄÊä³ö½á¹û(20) ¡£

#include

struct A{A( ){ cout<<'A';}}; struct B{B( ){ cout<<'B';}}; struct C: A{C( ){ cout<<'C';}};

struct D: virtual B, C{D( ){ cout<<'D';}}; struct E: A{ C c;

E( ): c( ){ cout<<'E';} };

struct F: virtual B, C, D, E{ F( ){ cout<<'F';} };

void main( ){

A a; cout<<'\\n'; B b; cout<<'\\n'; C c; cout<<'\\n'; D d; cout<<'\\n'; E e; cout<<'\\n'; F f; cout<<'\\n'; }

ËÄ. Ö¸³öÒÔϳÌÐòµÄÓï·¨´íÎó¼°ÆäÔ­Òò(15) ¡£

class A{

static int a=0; protected: int b; public: int c; A(int);

operator int( ); } a(1, 2); class B: A{ B(int);

virtual int d; int e; public: A::b;

friend int operator =(B); static B(int, int); } b=5; class C: B{ public:

int operator++(double); };

int main( ){

int *A::*p, i; i=a.a;

i=A(4); i=b.c; p=&A::c; i=b; return ; }

Îå. Ö¸³ömain±äÁ¿iÔÚÿÌõ¸³ÖµÓï¾äÖ´ÐкóµÄÖµ(15) ¡£

int x=2, y=x+30; struct A{

static int x; int y; public:

operator int( ){ return x-y; }

A operator ++(int){ return A(x++, y++); }

A(int x=::x+2, int y=::y+3){ A::x=x; A::y=y; } int &h(int &x); };

int &A::h(int &x) {

for(int y=1; y!=1|| x<201; x+=11, y++) if(x>200) { x-=21; y-=2;} return x-=10; }

int A::x=23; void main( ){

A a(54, 3), b(65), c;

int i, &z=i, A::*p=&A::y; z=b.x; i=a.x; i=c.*p; i=a++; i=::x+c.y; i=a+b; b.h(i)=7; }

Áù. ΪÁËûÓÐÎó²îµØ±íʾ·ÖÊý£¬¶¨ÒåÀàFRACTIONÀ´±íʾ·ÖÊý£¬Çë±à³ÌʵÏÖ·ÖÊýÀàÖеijý

cmdÍâµÄËùÓк¯Êý(15)¡£

class FRACTION{ //¶ÔÓÚ7£¬numerator´æ·Ö×Ó6£¬denominator´æ·Öĸ7 int numerator, denominator; static int cmd(int x, int y); public:

int operator>(const FRACTION&)const; FRACTION(int num, int den=1); FRACTION operator*( )const;

//´óÓڱȽϣ¬Àý7>3 //·ÖÊýÔ¼¼ò£¬*36=6 //¼Ó·¨£¬7+3=21

621246232305626 //ÇóÕûÊýx,yµÄ×î´ó¹«Ô¼Êý

//num¡¢den¸÷Ϊ·Ö×ӺͷÖĸ

FRACTION operator+(const FRACTION&)const;

FRACTION operator*(const FRACTION&)const; //³Ë·¨£¬7*3=21=7 };

int FRACTION::cmd(int x, int y){ int r;

if(x

return x; }

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