CPA-21-02無料問題集「C++ Institute CPA - C++ Certified Associate Programmer」

質問 1

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: 5

（B）It prints: ?3

（C）It prints: 6

（D）It prints: 2

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>
#include <string>
using namespace std;
class complex{
double re;
double im;
public:
complex() : re(1),im(0.4) {}
bool operator==(complex &t);
};
bool complex::operator == (complex &t){
if((this?>re == t.re) && (this?>im == t.im))
return true;
else
return false;
}
int main(){
complex c1,c2;
if (c1==c2)
cout << "OK";
else {
cout << "ERROR";
}
}

（A）Compilation error

（B）It prints: OK

（C）It prints: ERROR

（D）Runtime error.

正解：B 解答を投票する

質問 3

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 4

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

（A）It prints: 5

（B）It prints: 0

（C）It prints: 05

（D）It prints: 15

正解：C 解答を投票する

質問 5

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 6

If there is one, point out an error in the program
#include <iostream>
using namespace std;
int main()
{
int c = 'a';
switch(i)
{
case '2':
cout<<"OK";
case '1':
cout<<"Error";
default:
break;
}
return 0;
}

（A）Use of undeclared identifier 'i'

（B）Illegal use of 'break'

（C）Illegal use of 'continue'

（D）No Error

正解：A 解答を投票する

質問 7

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 8

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(10);

（D）cout << fun(*x) ;

正解：C、D 解答を投票する

質問 9

What is the output of the program given below?
#include <iostream>
using namespace std;
int main (int argc, const char * argv[])
{
enum state { ok, error, warning};
enum state s1, s2, s3, s4;
s1 = ok;
s2 = warning;
s3 = error;
s4 = ok;
cout << s1<< s2<< s3<< s4;
return 0;
}

（A）0210

（B）compilation fails

（C）1322

（D）1234

正解：A 解答を投票する

CPA-21-02 無料問題集「C++ Institute CPA - C++ Certified Associate Programmer」

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