首页/ 题库 / [单选题]若有以下程序: #include <io的答案

若有以下程序: #include <iostream> using namespace std; class A { private: int a; public: A(int i) { a=i; } void disp() { cout<<a<<", "; } }; class B { private: int b; public: B(int j) { b=j; } void disp() { cout<<b<<", "; } }; class C : public B,public A { private: int c; public: C int k) :A(k-2),B(k+2) { c=k; } void disp() { A: :disp (); B::disp(); cout<<c<<end1; } }; int main () { C ebj (10); obj .disp (); return 0; } 程序执行后的输出结果是( )。

单选题
2022-02-24 18:07
A、10,10,10
B、10,12,14
C、8,10,12
D、8,12,10
查看答案

正确答案
D

试题解析
解析:本题考核派生类构造函数的使用。本题中,派生C具有多重继承关系,所以在派生类C的构造函数中应该包含基类A和B的成员初始化列表。

标签:
感兴趣题目
有下列程序: #include<iostream> using namespace std; c1ass TestClass { private; char c; public: TestClass(char n):c(n){} ~TeStClass() { cout<<c } }; class TestClass1:public TestClass {
下面程序的输出结果是( )。 #include <iostream> using namespace std; void main( ) { int i=8,*p=0; p = &i; coat<<p; }
有下列的程序: #include<cstring.h> #include<iostream.h> using namespace std; class MyString { public: MyString(const char*s); ~MyString()<delete[]data;} protected: unsigned len; char*data; };
有以下程序: #include <iostream> #include <string> using namespace std; int main () { char s[]=" 123\"; cout<<strlen (s) <<", "<<sizeof (s) <<end1; return 0; }
有下列程序: #include<iostream> using namespace std; int main() { void function(double val); double val; function(val); cout<<val; return 0; } void fimction(double val) { v
有如下程序: #include <iostream> using namespace std; int main() { int *p; *p = 9; cout << "The value at p: " << *p; return 0; } 编译运行程序将出现的情况是( )。
有如下程序: #include <iostream> using namespace std; int main( ){ int*P; *P=9; cout<<"The value at P:"<<*P: return 0; } 编译运行程序将出现的情况是
有如下程序: #include<iostream> using namespace std; int main() { int *p; *p=9; cout<<"The value at p:"<<*p; return 0; } 编译运行程序将出现的情况是( )
有以下程序: #include 〈iostream〉 using namespace std; #define M 10 #define B4 void setstar(char *a, int n) { int i; for (i=0; i
运行以下的程序代码,结果是( )。 #include<iostream> using namespace std; intmain() { int x=5; int *q=&x; int &y=x; y++; tout<<(*q)++<<end1; return 0; }
有以下程序: #include <iostream> #include <string> using namespace std; class base { private: char baseName[10]; public: base ( ) { strcpy (baseName, "Base"); } virtual char *myName() {
有如下程序: #include<iostream> using namespace std; classA { public: A(){cout<<"A";} }; class B{public:B(){cout<<"B";}}; class C:public A { B b; public: C(){cout<<"C";} }; int main(){C obj;return 0;} 执行后的输出结果是( )
相关题目
若有如下程序: #include<iostream> using namespace std; class TestClass { public: void who(){cout<<“TestClass”<<endl;} }; class TestClassl:public TestClass { public: void who(){cout<<“TestClassl”<<endl; int main() { TestC
有如下程序: #include <iostream> using namespace std; class AA { public: virtual void f() { cout<< "AA"; } }; class BB : public AA { public: BB() { cout << "BB"; } }; cla
下面程序的输出结果是( )。 #include<iostream> using namespace std; void main() { int a=18; int * p=&a; cout<<* p;}
有以下程序: #include<iostream> using namespace std; class Complex { public: Complex(dOuble r=0,dOuble i=0):re(r),im(i){} doublereal()const{return re;} doubleimag()const{return im;} Complex operator+(Complex c)const {return Complex
若有以下程序: #include <iost ream> using namespace std; class A { private: int a; public: A(int i) { a=i; } void disp () { cout<<a<<", "; } }; class B { private:
若有以下程序: #include <iostream> using namespace std; class point { private: int x, y; public: point ( ) { x=0; y=0; } void setpoint(int x1,int y1) { x=x1; y=y1;
有如下程序: #include <iostream> using namespace std; Class x { protected: int a; public: x() { a=1; } }; class x1 : virtual public x { public: x1() { a+=1; cout<<
若有以下程序: #include<iostream> using namespace Std; Class Base {public: Base() {x=0;} int x;}; class Derivedl:virtua1 public Base {public: Derived1() {x=10;}}; class Derived2:virtual1 public Base {public: Derived2()
有如下程序: #include <iostream> using namespace std; class AA { public: virtual void f() { cout<< "AA"; } }; class BB : public AA { public: BB() { cout << "BB"; } }; cla
如下程序的输出结果是 #include<iostream> using namespace std; class A{ public: A( ){cout<<"A";} }; class B{public:B( ){cout<<"B";}}; class C:public A{ B b; public: C( ){cout<<"C";} }; int main( ){C obj;return 0;}
有如下程序: #include<iostream> using namespace std; class A { public: A(){cout<<"A";} }; class B<public:B(){cout<<"B";)); class C:public A { B b; public: C(){cout<<"C";} }; int main(){Cobj;retum 0;} 执行后的输出结果是
有如下程序: #include<iostream>#include<iosream> using namespace std; class BASE{ char c; public; BASE(char n):c(n){} virtual ~ BASE(){cout<<c;} }; class DERIVED; public BASE{ char c; public: DERIVED (char n): BASE (n+1)
下列程序的输出结果为( )。 #include (iostream) using namespace std; void main( ) char,a[ ] = { "hello" ," the" ," world" }; char * * pa = a: pa + +; cout << * pa << ENDL; }
有以下程序: #include <iostream> using namespace std; char *x[]={"First", "Second", "Third" }; void f(char *z[ ]) { cout<<*z++<<end1; } int main ( ) { char **y; y=x; f(y); return 0; }
以下程序的执行结果是 ( )。 #include <iostream> using namespace std; class sample { private: int x; public: sample (int A) { x=a; } friend double square(sample s); }; double square(sample s) {
有以下程序: #include <iostream> using namespace std; class BASE { private: char c; public: BASE(char n):c(n);{} virtual~BASE() { cout<<c; } }; class DERIVED:public BASE { char c; p
有以下程序: #include <iostream> using namespace std; int s=0; class sample { static int n; public: sample (int i) { n=i; } static void add() { s+=n; } }; int sample::n=0;
若有以下程序: #include <iostream> using namespace std; int f() { static int i = 0; int s = 1; s+=i; i++; return s; } int main ( ) { int i,a = 0; for(i = 0;i<5;i++) a+=f ( ); cout
下面程序的输出结果是( )。 #include <iostream> using namespace std; class A { public: A( ) {cout<<"A";} } class B { public: B() {coat<<"B" ;} } class C: public A { public: B b; C() {cout<<"C";} } void mian(){ C c; }
在下列程序的横线处填上适当的内容,使程序执行后的输出结果为ABCD。 #include<iostream> using namespace std; class A { public:A(){cout<<‘A’;} }; Class B: { public:B(){cout<<‘B’;} }; class C:virtual public A { public:C(){cout<<‘C’;} }; class D:p
广告位招租WX:84302438

免费的网站请分享给朋友吧