최신 CPA-21-02 무료덤프 - C++ Institute CPA - C++ Certified Associate Programmer

문제1

Which code, inserted at line 5, generates the output "ABC"?
#include <iostream>
using namespace std;
class A {
public:
//insert code here
};
class B:public A {
public:
void Print(){ cout<< "B"; }
};
class C:public B {
public:
void Print(){ cout<< "C"; }
};
int main()
{
A ob1;
B ob2;
C ob3;
A *obj;
obj = &ob1;
obj?>Print();
obj = &ob2;
obj?>Print();
obj = &ob3;
obj?>Print();
}

A. virtual void Print(){ cout<<"A";}

B. None of these

C. void Print(){ cout<<"A";}

D. virtual void Print(string s){ cout<<s;}

정답: A

문제2

What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
class B;
class A {
int age;
public:
A () { age=5; };
friend class B;
};
class B {
string name;
public:
B () { name="Bob"; };
void Print(A ob) {
cout << name << ob.age;
}
};
int main () {
A a;
B b;
b.Print(a);
return 0;
}

A. It prints: Bob

B. It prints: 5

C. None of these

D. It prints: Bob5

정답: D

문제3

Which code, inserted at line 18, generates the output "AB"
#include <iostream>
using namespace std;
class A
{
public:
void Print(){ cout<< "A";}
void Print2(){ cout<< "a";}
};
class B:public A
{
public:
void Print(){ cout<< "B";}
void Print2(){ cout<< "b";}
};
int main()
{
B ob2;
//insert code here
ob2.Print();
}

A. ob2.B::Print();

B. ob2?>B::Print();

C. ob2.A::Print();

D. ob2?>A::Print();

정답: C

문제4

What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
class A {
public:
A() { cout << "A no parameters";}
A(string s) { cout << "A string parameter";}
A(A &a) { cout << "A object A parameter";}
};
class B : public A {
public:
B() { cout << "B no parameters";}
B(string s) { cout << "B string parameter";}
B(int s) { cout << "B int parameter";}
};
int main () {
A a2("Test");
B b1(10);
B b2(b1);
return 0;
}

A. It prints: A no parametersA no parametersB string parameter

B. It prints: A string parameterA no parametersB int parameterA object A parameter

C. It prints: A no parametersA no parameters

D. It prints: A no parametersB string parameter

정답: B

문제5

What is the meaning of the following declaration? (Choose two.)
char **ptr;

A. ptr is a pointer to char

B. ptr is a pointer to char*

C. ptr is a pointer to a pointer to char

D. ptr is a pointer to a pointer to a pointer to char

정답: B,C

문제6

What happens if character 3 is entered as input?
#include <iostream>
using namespace std;
class A {
public:
int i;
};
int main () {
int c;
A obj;
obj.i = 5;
cin >> c;
try
{
switch (c)
{
case A. throw 20;
case B. throw 5.2f;
case C. throw obj;
default: cout<<"No exception";
}
}
catch (int e)
{ cout << "int exception. Exception Nr. " << e; }
catch (A e)
{ cout << "object exception. Exception Nr. " << e.i; }
catch (...)
{ cout << "An exception occurred."; }
return 0;
}

A. It prints: An exception occurred

B. It prints: object exception. Exception Nr. 5

C. It prints: int exception. Exception Nr.

D. It prints: No exception

정답: B

문제7

Which of the following expressions decrement variable i by 2? (Choose two.)

A. --i--;

B. --i; i--;

C. i -= 2;

D. i &= 0x03;

정답: B,C

문제8

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class A {
public:
void Print(){ cout<<"A"; }
};
class B:public A {
public:
virtual void Print(){ cout<< "B"; }
};
class C:public B {
public:
void Print(){ cout<< "C"; }
};
int main()
{
A ob1;
B ob2;
C ob3;
A *obj;
obj = &ob1;
obj?>Print();
obj = &ob2;
obj?>Print();
obj = &ob3;
obj?>Print();
}

A. It prints: AAA

B. It prints: ABB

C. It prints: ABC

D. It prints: BBB

정답: A

문제9

What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
class A {
int x;
protected:
int y;
public:
int z;
};
class B : private A {
string name;
public:
void set() {
x = 1;
}
void Print() {
cout << x;
}
};
int main () {
B b;
b.set();
b.Print();
return 0;
}

A. It prints: 1

B. It prints: 123

C. It prints: ?123

D. Compilation error

정답: D

문제10

What happens when you attempt to compile and run the following code?

A. It prints: AABDD

B. It causes a compilation error

C. It pints: AABD

D. It prints: AAABDD

정답: B

문제11

What happens when you attempt to compile and run the following code?
#include <cstdlib>
#include <iostream>
using namespace std;
float* sum(float a,float b);
float* sum(float a,float b)
{
float *f = new float;
*f = a+b;
return f;
}
int main()
{
float a,b,*f;
a = 1.5; b = 3.4;
f = sum(a,b);
cout<<*f;
return 0;
}

A. It prints: 5

B. It prints: 4.9

C. It prints: 0

D. It prints: 4

정답: B

문제12

Which code, inserted at line 8, generates the output "100"?
#include <iostream>
using namespace std;
int fun(int);
int main()
{
int *x = new int;
*x=10;
//insert code here
return 0;
}
int fun(int i)
{
return i*i;
}

A. cout << fun(5) ;

B. cout << fun(y) ;

C. cout << fun(*x) ;

D. cout << fun(10);

정답: C,D

문제13

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
void fun(int);
int main()
{
int a=0;
fun(a);
return 0;
}
void fun(int n)
{
if(n < 2)
{
fun(++n);
cout << n;
}
}

A. It prints: 21

B. None of these

C. It prints: 012

D. It prints: 0

정답: A

문제14

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int op(int x, int y);
float op(int x, float y);
int main()
{
int i=1, j=2, k;
float f=0.3;
k = op(i, j);
cout<< k << "," << op(0, f);
return 0;
}
int op(int x, int y)
{
return x+y;
}
float op(int x, float y)
{
return x?y;
}

A. It prints: 3,?0.3

B. It prints: 0,0

C. It prints: 3,1

D. It prints: 3,0

정답: A

문제15

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class Base {
static int age;
public:
Base () {};
~Base () {};
void setAge(int a=20) {age = a;}
void Print() { cout << age;}
};
int Base::age=0;
int main () {
Base a;
a.setAge(10);
a.Print();
a.setAge();
a.Print();
return 0;
}

A. It prints: 1020

B. It prints: 2010

C. It prints: 10

D. It prints: 20

정답: A

문제16

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class A {
public:
void Print(){ cout<<"A";}
};
class C:public A {
public:
virtual void Print()=0;
};
int main()
{
C obj3;
obj3?>Print();
}

A. It prints: AB

B. It prints: A

C. It prints: BB

D. Compilation error

정답: D

최신 CPA-21-02 무료덤프 - C++ Institute CPA - C++ Certified Associate Programmer

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