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:
A.10,10,10
B.10,12,14
C.8,10,12
D.8,12,10
第1题:
若有如下程序: #include<iostream> using namespace std; Class TestClass1 { private: int a; public: TestClassl(int i) { a=i; } void disp() { cout<<a<<“,”; } }; Class TestClass2 { private: int b; public
A.10,10,10
B.10,12,14
C.8,10,12
D.8,12,10
第2题:
有以下程序:
include<iostream>
using namespace std;
class Base
{
public:
Base()
{
K=0;
}
int x;
};
class Derivedl:virtual public Base
{
public:
Derivedl()
{
x=10;
}
};
class Derived2:virtua1 public Base
第3题:
有如下程序: #include <iostream> using namespace std; class Base { public: Base(int x=0) { cout<<x; } } class Derived: public Base{ public: Derived(int x=0) { cout<<x; } private: Base val; }; int main() { Derived d(1); return 0; }程序的输出结果是
A.0
B.1
C.1
D.1
第4题:
若有以下程序: #include <iostream> using namespace std; class A { private: int a; public: A(im i) { a=i; } void disp() cout<<a<<","; } }; class B { private: int b; public: B(int j) { b=j; } void disp0 { cout<<b<<","; } }; class C: public B,public A { private: int c; public: C(int k):A(k-2),B(k+2) { c=k; } void disp0 { A::disp(); B::disp(); cout<<c<<endl; } }; int main() { C obj(10); obj.disp(); return 0; } 程序执行后的输出结果是( )。
A.10,10,10
B.10,12,14
C.8,10,12
D.8,12,10
第5题:
若有以下程序:#include <iostream>using namespace std;class A{private: int x;public: int z; void setx(int i) { x=i; } int getx() { return x; }};class B: public A{private: int m;public: int p; void setvalue(int a, int b, int c) { setx(a); z=b; m=c; } void display() { cout<<getx()<<","<<z<<","<<m<<end1; }};int main(){ B obj; obj.setvalue(2,3,4); obj.display(); return 0;程序运行以后的输出结果是( )
A.产生语法错误
B.2,3,4
C.2,2,2
D.4,3,2
第6题:
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 obj(10); obj.disp(); return 0; } 程序执行后的输出结果是
A.10,10,10
B.10,12,14
C.8,10,12
D.8,12,10
第7题:
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<<endl; } }; int main () { C obi (10); obj.disp (); return 0; } 程序执行后的输出结果是
A.10,10,10
B.10,12,14
C.8,10,12
D.8,12,10
第8题:
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<<“,”;
A.10,10,10
B.10,12,14
C.8,10,12
D.8,12,10
第9题:
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) {
A.20
B.30
C.900
D.400
第10题:
有以下程序: #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) { return S.X*S.K; } int main() { sa
A.20
B.30
C.900
D.400