CPA-21-02 試験問題を無料オンラインアクセス

What is the output of the program?
#include <iostream>
#include <string>
using namespace std;
int main()
{
char str[] = "Hello\0\World\0";
cout << str;
return 0;
}

• A.It prints: World
• B.It prints: HW
• C.It prints: World\0World
• D.It prints: Hello

What is the output of the program?
#include <iostream>
using namespace std;
class Base {
static int age;
public:
Base () {};
~Base () {};
void setAge(int a=10) {age = a;}
void Print() { cout << age;}
};
int Base::age=0;
int main () {
Base a,*b;
b = new Base();
a.setAge();
b?>setAge(20);
a.Print();
b?>Print();
return 0;
}

• A.It prints: 20
• B.It prints: 2020
• C.It prints: 10
• D.It prints: 1020

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int x=5;
static int y;
int i=0;
void static myFunction()
{
y=x++ + ++i;
}
int main (int argc, const char * argv[])
{
x++;
myFunction();
cout<<y<<" "<<x<< " " << i;
}

• A.It prints: 7 7 1
• B.It prints: 6 5 1
• C.Compilation fails
• D.It prints: 5 5 0

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,z;
A() : x(1), y(2), z(0) { z = x + y; }
A(int a, int b) : x(a), y(b) { z = x + y;}
void Print() { cout << z; }
};
class B : public A {
public:
int y;
B() : A() {}
B(int a, int b) : A(a,b) {}
void Print() { cout << z; }
};
int main () {
A b;
b.Print();
return 0;
}

• A.It prints: 0
• B.It prints: 1
• C.It prints: 2
• D.It prints: 3

What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
class A {
public:
int x;
};
class B : public A {
public:
B() { x=1;}
B(int x) {this?>x = x;}
};
int main () {
B c1;
B c2(10);
cout << c1.x;
cout << c2.x;
return 0;
}

• A.It prints: 110
• B.It prints: 010
• C.It prints: 1
• D.It prints: 00