CPA無料問題集「C++ Institute C++ Certified Associate Programmer」

質問 1

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";}
};
int main()
{
A *obj;
A ob1;
obj = &ob1; obj->Print(); B ob2; obj = &ob2; obj->Print(); }

（A）It prints: BA

（B）It prints: BB

（C）It prints: AA

（D）It prints: AB

正解：C 解答を投票する

質問 2

What is the output of the program given below?
#include <iostream>
using namespace std;
int main (int argc, const char * argv[])
{
int i=10;
{
int i=0;
cout<<i;
}
{
int i=5;
cout << i;
}
cout<<i;
return 0;
}

（A）None of these

（B）101010

（C）0510

（D）1010

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 3

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
void fun(char*);
int main()
{
char t[4]={'0', '1', '2', '3'};
fun(&t[2]);
return 0;
}
void fun(char *a)
{
cout << *a;
}

（A）It prints: 21

（B）It prints: 00

（C）It prints: 02

（D）It prints: 2

正解：D 解答を投票する

質問 4

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: 5

（B）It prints: Bob5

（C）None of these

（D）It prints: Bob

正解：B 解答を投票する

質問 5

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int min(int a, int b);
int main()
{
int min(int,int);
int b;
b = min(10,20);
cout << b;
return 0;
}
int min(int a, int b)
{
return(b);
}

（A）It prints: 10

（B）It prints: 2010

（C）It prints: 1020

（D）It prints: 20

正解：D 解答を投票する

質問 6

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class First
{
public:
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 Firstfrom Second

（B）It prints: from First

（C）It prints: from Firstfrom First

（D）It prints: from Secondfrom Second

正解：C 解答を投票する

質問 7

Which code, inserted at line 19, generates the output "23"?
#include <iostream>
#include <string>
using namespace std;
class A {
int x;
protected:
int y;
public:
int z;
A() { x=1; y=2; z=3; }
};
class B : public A {
string z;
public:
int y;
void set() { y = 4; z = "John"; }
void Print() {
//insert code here
}
};
int main () {
B b;
b.set();
b.Print();
return 0;
}

（A）cout << B::y << B::z;

（B）cout << y << z;

（C）cout << y << A::z;

（D）cout << A::y << A::z;

正解：D 解答を投票する

質問 8

What is the output of the program?
#include <iostream> #include <string>
using namespace std;
struct t { int tab[2];
};
class First
{
struct t u;
public:
First() {
u.tab[0] = 1;
u.tab[1] = 0;
}
void Print(){
cout << u.tab[0] << " " << u.tab[1];
}
};
int main()
{
First t;
t.Print();
}

（A）It prints: 2 2

（B）It prints: 0 0

（C）It prints: 1 0

（D）It prints: 1 1

正解：C 解答を投票する

質問 9

What happens if you try to compile and run this program?
#include <iostream>
using namespace std;
int main (int argc, const char * argv[])
{
print("Test");
return 0;
}
void print(int c[])
{
cout<<c;
}

（A）It prints: Test

（B）Compilation fails

（C）None of these

（D）Program terminates abnormally

正解：B 解答を投票する

質問 10

What is the output of the program?
#include <iostream> #include <string>
using namespace std;
int main()
{
string s1="Wo";
string s2;
s2 = s1;
string s3;
s3 = s2.append("rldHello");
cout << s3;
return( 0 );
}

（A）It prints: HelloWo

（B）It prints: WorldHello

（C）It prints: World

（D）It prints: Hello

正解：B 解答を投票する

質問 11

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）It prints: 0

（C）None of these

（D）It prints: 012

正解：A 解答を投票する

質問 12

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
void fun(char*);
int main()
{
char t[4]={'0', '1', '2', '3'};
fun(&t[0]);
return 0;
}
void fun(char *a)
{
cout << *a;
}

（A）It prints: 0123

（B）It prints: 01

（C）It prints: 0

（D）It prints: 1

正解：C 解答を投票する

質問 13

What is the output of the program?
#include <iostream>
#include <string>
using namespace std;
int main () {
string s1 = "Hello", s2 = "World";
s2 = s1 + s2;
cout << s2;
return 0;
}

（A）It prints: HelloWorld

（B）It prints: WorldHello

（C）It prints: Hello

（D）It prints: WorldHelloWorld

正解：A 解答を投票する

質問 14

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

（A）It prints: 0

（B）It prints: 4

（C）It prints: 2

（D）It prints: 16

正解：B 解答を投票する

質問 15

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main()
{
const int x=0;
const int *ptr;
ptr = &x;
cout<<*ptr;
return 0;
}

（A）It prints: 0

（B）It prints: 1

（C）It prints address of x

（D）Compilation error

正解：A 解答を投票する

質問 16

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class Base {
int age;
public:
class C {
int b;
void PrintC() { cout << b; }
};
Base () {age=5;};
void setAge(int a=20) {age = a;}
void Print() { cout << age;}
};
int main () {
Base a;
a.setAge(10);
a.Print();
return 0;
}

（A）It prints: 105

（B）It prints: 10

（C）It prints: 1020

（D）It prints: 20

正解：B 解答を投票する

CPA 無料問題集「C++ Institute C++ Certified Associate Programmer」

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