CPA-21-02 by C++ Institute Actual Free Exam Questions And Answers

Question 1

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
namespace myNamespace1
{
int x = 5;
int y = 10;
}
namespace myNamespace2
{
float x = 3.14;
float y = 1.5;
}
int main () {
namespace newname = myNamespace1;
using namespace newname;
cout << x << " ";
cout << y;
return 0;
}

A. It prints: 5

B. It prints: 5 10

C. It prints: 5 1.5

D. It prints: 3.14 1.5

Discussion 0

Correct Answer: B Vote an answer

Question 2

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main()
{
int *a= new int;
*a=100;
cout << *a;
delete a;
}

A. It prints: 1

B. It prints: 0

C. It prints: 100

D. It prints: 10

Discussion 0

Correct Answer: C Vote an answer

Question 3

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: Bob5

B. None of these

C. It prints: 5

D. It prints: Bob

Discussion 0

Correct Answer: A Vote an answer

Question 4

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: 6 5 1

B. It prints: 5 5 0

C. It prints: 7 7 1

D. Compilation fails

Discussion 0

Correct Answer: C Vote an answer

Question 5

What will happen when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
int fun(int);
int main()
{
int *x = new int;
*x=10;
cout << fun(*x);
return 0;
}
int fun(int i)
{
return i*i;
}

A. It will print: 101

B. It will print: 1

C. It will print: 10

D. It will print: 100

Discussion 0

Correct Answer: D Vote an answer

Question 6

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:
void Print(){ cout<< "B";}
};
int main()
{
A *obj;
A ob1;
obj = &ob1;
obj?>Print();
B ob2;
obj = &ob2;
obj?>Print();
}

A. It prints: BB

B. It prints: BA

C. It prints: AA

D. It prints: AB

Discussion 0

Correct Answer: C Vote an answer

Question 7

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

A. It causes a compilation error

B. It prints: 1

C. It prints: 0

D. It prints: -1

Discussion 0

Correct Answer: B Vote an answer

Question 8

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

A. It prints: 1

B. It prints: 0

C. It prints: 2

D. It prints: 4

Discussion 0

Correct Answer: D Vote an answer

Question 9

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int fun(int x) {
return x<<2;
}
int main(){
int i;
i = fun(1) / 2;
cout << i;
return 0;
}

A. It prints: 1

B. It prints: 0

C. It prints: 2

D. It prints: 4

Discussion 0

Correct Answer: C Vote an answer

Question 10

How could you pass arguments to functions?

A. by void

B. by reference

C. by value

D. by pointer

Discussion 0

Correct Answer: B,C,D Vote an answer

C++ Institute CPA - C++ Certified Associate Programmer - CPA-21-02 Exam Practice Test

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