c++程序分析题(20页).doc

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1、-三 程序分析题阅读以下程序，写出其运行结果。1#include using namespace std;int a 10 = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ;int fun( int i );void main() int i ,s = 0; for( i = 0; i = 10; i+ ) try s = s + fun( i ) ; catch( int ) cout 数组下标越界！ endl; cout s = s = 10 ) throw i ; return ai ;2#include using namespace std;void f();clas

2、s T public: T() cout constructor endl; try throw exception; catch( char * ) cout exception2 endl; throw exception; T() cout destructor; ;void main() cout main function endl; try f() ; catch( char * ) cout exception1 endl; cout main function endl; void f() T t; 3#include using namespace std;class Bcl

3、ass public:Bclass( int i, int j ) x = i; y = j; virtual int fun() return 0 ; protected: int x, y ;class Iclass:public Bclass public : Iclass(int i, int j, int k):Bclass(i, j) z = k; int fun() return ( x + y + z ) / 3; private : int z ;void main() Iclass obj( 2, 4, 10 ); Bclass p1 = obj; cout p1.fun(

4、) endl; Bclass & p2 = obj ; cout p2.fun() endl; cout p2.Bclass : fun() endl; Bclass *p3 = &obj; cout fun() endl;4#include using namespace std;class BASE public: virtual void getxy( int i,int j = 0 ) x = i; y = j; virtual void fun() = 0 ; protected: int x , y; ;class A: public BASE public:void fun()

5、coutx = xty = x * x = x*xendl; ;class B:public BASE public: void fun() cout x = x t y = y endl; cout y = x / y = x / y getxy( 10 ); pb - fun(); pb = &obj2; pb - getxy( 100, 20 ); pb - fun();5. #include using namespace std;class BASE1 public: BASE1( int i ) cout 调用基类BASE1的构造函数: i endl ; ;class BASE2

6、public: BASE2( int j ) cout 调用基类BASE2的构造函数: j endl ; ; class A: public BASE1, public BASE2 public:A( int a, int b, int c, int d ) : BASE2(b), BASE1(c), b2(a), b1(d) cout 调用派生类A的构造函数: a+b+c+d endl; private: BASE1 b1; BASE2 b2; ; void main() A obj( 1, 2, 3, 4 ); 6. #include using namespace std;class T

7、 public : T() a = 0; b = 0; c = 0; T( int i , int j , int k ) a = i; b =j ; c = k; void get( int &i , int &j , int &k ) i = a; j = b; k = c; T operator * ( T obj );private: int a , b , c;T T:operator * ( T obj ) T tempobj; tempobj.a = a * obj.a; tempobj.b = b * obj.b; tempobj.c = c * obj.c; return t

8、empobj;void main() T obj1( 1,2,3 ), obj2( 5,5,5 ), obj3; int a , b , c; obj3 = obj1 * obj2; obj3.get( a, b, c ); cout ( obj1 * obj2 ): t a = a t b = b t c = c t endl; ( obj2 * obj3 ).get( a, b, c ); cout ( obj2 * obj3 ): t a = a t b = b t c = c t endl;7. #include using namespace std;class vector pub

9、lic: vector() vector(int i,int j) x = i ; y = j ; friend vector operator + ( vector v1, vector v2 ) vector tempvector ; tempvector.x = v1.x + v2.x ; tempvector.y = v1.y + v2.y ; return tempvector ; void display() cout ( x , y ) endl ; private: int x , y ;void main() vector v1( 1, 2 ), v2( 3, 4 ), v3

10、 ; cout v1 = ; v1.display() ; cout v2 = ; v2.display() ; v3 = v1 + v2 ; cout v3 = v1 + v2 = ; v3.display() ; 8 #include using namespace std; struct data int n ; int score ; ; void main() data a3 = 1000,83,1005,70,1009,95 , *p = a ; cout score endl ; cout score endl ; cout score endl ; cout (*p). sco

11、re + endl ; 9 #include using namespace std;class A public :int f1();int f2();void setx( int m ) x = m ; cout x endl; void sety( int n ) y = n ; cout y endl; int getx() return x ; int gety() return y ; private :int x, y ;int A:f1() return x + y ; int A:f2() return x - y ; void main() A a ;a.setx( 10

12、) ;a.sety( 5 ) ;cout a.getx() t a.gety() endl ;cout a.f1() t a.f2() endl ;10#include using namespace std;class T public : T( int x, int y ) a = x ; b = y ; cout 调用构造函数2. endl ; cout a t b endl ; T( T &d ) cout 调用构造函数1. endl ; cout d.a t d.b endl ; T() cout 调用析构函数.endl; int add( int x, int y = 10 ) r

13、eturn x + y ; private : int a, b ;void main() T d1( 2, 4 ) ; T d2( d1 ) ; cout d2.add( 8 ) endl ;11#include using namespace std; class T public: T(int x) a=x; b+=x; static void display(T c) couta=c.atb=c.bendl; private: int a; static int b; ;int T:b=5;void main() T A(3),B(5); T:display(A); T:display

14、(B);12#include using namespace std;class A public : A() a = 25 ; void printa() cout A:a = a endl ; private : int a ; friend class B ; ;class B public: void display1( A t ) t.a + ; cout display1:a = t.a endl ; ; void display2( A t ) t.a - ; cout display2:a = t.a endl ; ;void main() A obj1 ; B obj2 ;

15、obj1.printa() ; obj2.display1( obj1 ) ; obj2.display2( obj1 ) ; obj1.printa() ;13. #include using namespace std;class A public: A( ) cout A endl; A( ) cout A endl; ; class B public: B( ) f( ); cout B endl; virtual void f( ) cout B:f endl; virtual B( ) cout B endl; ;class D: public B public: D( ) cou

16、t D endl; void f( ) cout D:f endl; virtual D( ) cout D f( ); delete pB;14. #include using namespace std;class Myclasspublic: Myclass(int a,int b,int c); void PrintNumber( ); void PrintSum( ); private: int A,B,C; static int Sum; int Myclass:Sum=10; Myclass:Myclass(int a,int b,int c) A=a; B=b; C=c; Sum+=A+B+C; void Myclass:PrintNumber() cout Number=A,B,Cendl; void Myclass:PrintSum( ) coutSum=Sumendl;void main( ) Myclass M(3,7,10), N(14,9,1); M.PrintNumber( ); N.PrintNumber( ); M.PrintSum( ); N.PrintSum( );第 21 页-