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

質問 1

What is the output of the program?
#include <iostream> #include <string>
using namespace std;
class First
{
string name;
public:
First() {
name = "Alan";
}
void setName(string n) {this->name = n;}
void setName() {this->name = "John";}
void Print(){
cout << name;
}
};
int main()
{
First ob1,*ob2;
ob2 = new First();
First *t;
t = &ob1;
t->setName();
t->Print();
t = ob2;
t->setName("Steve");
ob2->Print();
}

（A）It prints: JohnAlan

（B）It prints: JohnSteve

（C）It prints: AlanAlan

（D）It prints: AlanSteve

正解：B 解答を投票する

質問 2

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class A
{
public:
virtual void Print(){ cout<<"A";}
};
class B:public A
{
public:
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：D 解答を投票する

質問 3

What will happen when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main (int argc, const char * argv[])
{
enum state { ok, error, warning};
enum state s1, s2, s3;
s1 = ok;
s2 = warning;
s3 = error;
s4 = ok;
cout << s1<< s2<< s3;
return 0;
}

（A）compilation error

（B）It will print:"021"

（C）It will print:"132"

（D）It will print:"123"

正解：A 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 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: 123

（B）It prints: ?123

（C）It prints: 1

（D）Compilation error

正解：D 解答を投票する

質問 5

How many times will the program print "HELLO" ?
#include <iostream>
using namespace std;
int main()
{
cout<<"HELLO";
main();
return 0;
}

（A）1

（B）32769

（C）65536

（D）Till stack overflows

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;
int main()
{
int x,y=10;
float f;
f = 5.90;
cout << f << ", ";
x=f;
cout << x <<", ";
f=y;
cout << f;
return 0;
}

（A）It prints: 5, 5, 10.00

（B）It prints: 6, 5, 10.00

（C）It prints: 5.9, 5, 10

（D）It prints: 6, 5, 10

正解：C 解答を投票する

質問 7

What will happen when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main()
{
const char *s;
char str[] = "Hello ";
s = str;
while(*s) {
cout << *++s;
*s++;
}
return 0;
}

（A）The code will not compile.

（B）It will print:"Hello "

（C）It will print garbage value

（D）It will print:"el "

正解：D 解答を投票する

質問 8

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 9

Point out an error in the program.
#include <iostream>
using namespace std;
int main()
{
const int x=1;
int const *y=&x;
cout<<*y;
return 0;
}

（A）Error: unknown pointer conversion

（B）cannot convert from 'const int *' to 'int *const'

（C）Compilation error

（D）No error

正解：D 解答を投票する

質問 10

What is the output of the program if character 2 is supplied as input?
#include <iostream>
using namespace std;
int main () {
int c;
cin >> c;
try
{
switch (c)
{
case 1:
throw 20;
case 2:
throw 5.2f;
}
}
catch (int e)
{ cout << "int exception. Exception Nr. " << e; }
catch (float e)
{ cout << "float exception. Exception Nr. " << e; }
catch (...)
{ cout << "An exception occurred."; }
return 0;
}

（A）It prints: int exception. Exception Nr. 20

（B）It prints: An exception occurred

（C）It prints: float exception. Exception Nr. 5.2

（D）It prints: float exception. Exception Nr.

正解：C 解答を投票する

質問 11

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

（A）It prints: 0Bill

（B）It prints: Bill0

（C）None of these

（D）Compilation error

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;
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 13

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main()
{
int i=5;
switch(i)
{
case 1:
cout<<"Hello";
break;
case 2:
cout<<"world";
break;
case 3:
break;
default:
cout<<"End";
}
return 0;
}

（A）It prints: End

（B）It prints: Helloworld

（C）It prints: Hello

（D）It prints: world

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>
#include <string>
using namespace std;
int f(int i, int b);
int main()
{
int i=0;
i++;
for (i=0; i<=2; i++)
{
cout<<f(0,i);
}
return 0;
}
int f(int a, int b)
{
return a+b;
}

（A）It prints: 202020

（B）It prints: 0

（C）It prints: 012

（D）It prints: 2

正解：C 解答を投票する

質問 15

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";}
};
int main () {
A a2("Test");
B b1("Alan");
B b2(b1);
return 0;
}

（A）It prints: A no parametersB string parameter

（B）It prints: A no parametersA no parametersB string parameter

（C）It prints: A string parameterA no parametersB string parameterA object A parameter

（D）It prints: A no parametersA no parameters

正解：C 解答を投票する

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

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