CPA-21-02 試験問題を無料オンラインアクセス

What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
class A {
public:
int x;
A() { x=0;}
};
class B {
public:
int x;
B() { x=1;}
};
class C :public A, public B {
public:
int x;
C(int x) {
this?>x = x;
A::x = x + 1;
}
void Print() { cout << x << A::x << B::x; }
};
int main () {
C c2(1);
c2.Print();
return 0;
}

• A.It prints: 111
• B.It prints: 1
• C.It prints: 2
• D.It prints: 121

What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
class A {
protected:
int y;
public:
int x;
int z;
A() { x=2; y=2; z=3; }
A(int a, int b) : x(a), y(b) { z = x ? y;}
void Print() {
cout << z;
}
};
int main () {
A a(2,5);
a.Print();
return 0;
}

• A.It prints: 6
• B.It prints: ?3
• C.It prints: 2
• D.It prints: 5

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class First
{
public:
virtual void Print(){ cout<<"from First";}
};
class Second:public First
{
public:
void Print(){ cout<< "from Second";}
};
void fun(First *obj);
int main()
{
First FirstObject;
fun(&FirstObject);
Second SecondObject;
fun(&SecondObject);
}
void fun(First *obj)
{
obj?>Print();
}

• A.It prints: from First
• B.It prints: from Firstfrom First
• C.It prints: from Firstfrom Second
• D.It prints: from Secondfrom Second

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main()
{
int *a= new int;
*a=100;
cout << *a;
delete a;
}

• A.It prints: 100
• B.It prints: 1
• C.It prints: 10
• D.It prints: 0

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class complex{
double re;
double im;
public:
complex() : re(0),im(0) {}
complex(double x) { re=x,im=x;};
complex(double x,double y) { re=x,im=y;}
void print() { cout << re << " " << im;}
};
int main(){
complex c1;
c1 = 3.0;
c1.print();
return 0;
}

• A.It prints: 3 3
• B.It prints: 0 0
• C.It prints: 1 1
• D.Compilation error