Free C++ Institute CPA-21-02 Actual Exam Questions
The questions for this exam were last updated on January 7, 2026
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Question No. 1
What happens when you attempt to compile and run the following code?
#include
using namespace std;
int main(){
int i, j;
for(i = 0, j = 1; j < 2, i < 4; i++, j++);
cout << i << " " << j;
return 0;
}
#include
using namespace std;
int main(){
int i, j;
for(i = 0, j = 1; j < 2, i < 4; i++, j++);
cout << i << " " << j;
return 0;
}
Select one option, then reveal solution.
Question No. 2
What happens when you attempt to compile and run the following code?
#include
#include
using namespace std;
int f(int i, int b);
int main()
{
int i=0;
i++;
for (i=0; i<=2; i++)
{
cout<
return 0;
}
int f(int a, int b)
{
return a+b;
}
#include
#include
using namespace std;
int f(int i, int b);
int main()
{
int i=0;
i++;
for (i=0; i<=2; i++)
{
cout<
return 0;
}
int f(int a, int b)
{
return a+b;
}
Select one option, then reveal solution.
Question No. 3
Which of the following statements are correct about an array?
int tab[10];
int tab[10];
Select all that apply, then reveal solution.
Question No. 4
What happens when you attempt to compile and run the following code?
#include
#include
using namespace std;
class myClass : public exception
{
virtual const char* what() const throw()
{
return "My exception.";
}
} obj;
int main () {
try
{
throw obj;
}
catch (exception& e)
{
cout << e.what() << endl;
}
return 0;
}
#include
#include
using namespace std;
class myClass : public exception
{
virtual const char* what() const throw()
{
return "My exception.";
}
} obj;
int main () {
try
{
throw obj;
}
catch (exception& e)
{
cout << e.what() << endl;
}
return 0;
}
Select one option, then reveal solution.
Question No. 5
What is the output of the program if characters 'h', 'e', 'l', 'l' , 'o' and enter are supplied as input?
#include
#include
using namespace std;
void f();
int main()
{
f();
return 0;
}
void f()
{
char c;
c = cin.get();
cout << c;
if(c != '\n')
f();
}
#include
#include
using namespace std;
void f();
int main()
{
f();
return 0;
}
void f()
{
char c;
c = cin.get();
cout << c;
if(c != '\n')
f();
}
Select one option, then reveal solution.
Question No. 6
What happens when you attempt to compile and run the following code?
#include
using namespace std;
class complex{
double re;
double im;
public:
complex() : re(0),im(0) {}
complex(double x) { re=x,im=x;};
complex(double x,double y) { re=x,im=y;}
void print() { cout << re << " " << im;}
};
int main(){
complex c1;
double i=2;
c1 = i;
c1.print();
return 0;
}
#include
using namespace std;
class complex{
double re;
double im;
public:
complex() : re(0),im(0) {}
complex(double x) { re=x,im=x;};
complex(double x,double y) { re=x,im=y;}
void print() { cout << re << " " << im;}
};
int main(){
complex c1;
double i=2;
c1 = i;
c1.print();
return 0;
}
Select one option, then reveal solution.
Question No. 7
What happens when you attempt to compile and run the following code?
#include
using namespace std;
int main(){
int i = 1;
for(i=10; i>-1; i/=2) {
if(!i)
break;
}
cout << i;
return 0;
}
#include
using namespace std;
int main(){
int i = 1;
for(i=10; i>-1; i/=2) {
if(!i)
break;
}
cout << i;
return 0;
}
Select one option, then reveal solution.
Question No. 8
What is the output of the program?
#include
#include
using namespace std;
int main()
{
char str[] = "Hello\0\World\0";
cout << str;
return 0;
}
#include
#include
using namespace std;
int main()
{
char str[] = "Hello\0\World\0";
cout << str;
return 0;
}
Select one option, then reveal solution.
Question No. 9
What happens when you attempt to compile and run the following code?
#include
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<
#include
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<
Select one option, then reveal solution.
Question No. 10
What happens when you attempt to compile and run the following code?
#include
#include
using namespace std;
class A {
public:
string s;
A(string s) { this?>s = s; }
};
class B {
public:
string s;
B (A a) { this?>s = a.s; }
void print() { cout<
int main()
{
A a("Hello world");
B b=a;
b.print();
}
#include
#include
using namespace std;
class A {
public:
string s;
A(string s) { this?>s = s; }
};
class B {
public:
string s;
B (A a) { this?>s = a.s; }
void print() { cout<
int main()
{
A a("Hello world");
B b=a;
b.print();
}
Select one option, then reveal solution.
Question No. 11
What happens when you attempt to compile and run the following code?
#include
#include
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:
void set() {
y = 4;
z = "John";
}
void Print() {
cout << y << z;
}
};
int main () {
B b;
b.set();
b.Print();
return 0;
}
#include
#include
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:
void set() {
y = 4;
z = "John";
}
void Print() {
cout << y << z;
}
};
int main () {
B b;
b.set();
b.Print();
return 0;
}
Select one option, then reveal solution.
Question No. 12
What happens when you attempt to compile and run the following code?
#include
using namespace std;
int fun(int x) {
return 2*x;
}
int main(){
int i;
i = fun(1) & fun(0);
cout << i;
return 0;
}
#include
using namespace std;
int fun(int x) {
return 2*x;
}
int main(){
int i;
i = fun(1) & fun(0);
cout << i;
return 0;
}
Select one option, then reveal solution.
Question No. 13
What happens when you attempt to compile and run the following code?
#include
using namespace std;
int main()
{
int x=2, *y;
y = &x;
cout << *y + x;
return 0;
}
#include
using namespace std;
int main()
{
int x=2, *y;
y = &x;
cout << *y + x;
return 0;
}
Select one option, then reveal solution.
Question No. 14
What happens when you attempt to compile and run the following code?
#include
using namespace std;
void fun(int &i);
int main()
{
int i=2;
fun(i);
cout<
}
void fun(int &i)
{
i+=2;
}
#include
using namespace std;
void fun(int &i);
int main()
{
int i=2;
fun(i);
cout<
}
void fun(int &i)
{
i+=2;
}
Select one option, then reveal solution.
Question No. 15
What happens when you attempt to compile and run the following code?
#include
using namespace std;
int op(int x, int y);
int main()
{
float *pf;
float f=0.9;
pf=&f;
cout << op(1, *pf);
return 0;
}
int op(int x, int y)
{
return x*y;
}
#include
using namespace std;
int op(int x, int y);
int main()
{
float *pf;
float f=0.9;
pf=&f;
cout << op(1, *pf);
return 0;
}
int op(int x, int y)
{
return x*y;
}
Select one option, then reveal solution.