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CPA-21-02 CPA – C++ Certified Associate Programmer exam dumps questions
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Full version: CPA-21-02 Exam Dumps Questions
1.Which of the following statements are correct about an array?
int tab[10];
A. The array can store 10 elements.
B. The expression tab[1] designates the very first element in the array.
C. The expression tab[9] designates the last element in the array.
D. It is necessary to initialize the array at the time of declaration.
Answer: A, C
2.What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
void fun(int &i);
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int main()
{
int i=2;
fun(i);
cout<<i;
return 0;
}
void fun(int &i)
{
i+=2;
}
A. It prints: 2
B. It prints: 0
C. It prints: 4
D. It prints: 16
Answer: C
3.What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
#define DEF_A 0
#define DEF_B DEF_A+1
#define DEF_C DEF_B+1
int main(int argc, char *argv[]) {
cout << DEF_C;
return 0;
}
A. It prints: 2
B. It prints: 10
C. It prints: 0
D. It prints: 1
Answer: A
4.How many times will the program print "HELLO" ?
#include <iostream>
using namespace std;
int main()
{
cout<<"HELLO";
main();
return 0;
}
A. 65536
B. 32769
C. 1
D. Till stack overflows
Answer: D
5.What happens when you attempt to compile and run the following code?
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#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";}
B(int s) { cout << "B int parameter";}
};
int main () {
A a2("Test");
B b1(10);
B b2(b1);
return 0;
}
A. It prints: A no parametersA no parametersB string parameter
B. It prints: A string parameterA no parametersB int parameterA object A parameter
C. It prints: A no parametersB string parameter
D. It prints: A no parametersA no parameters
Answer: B
6.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:
virtual void Print(){ cout<< "B";}
};
int main()
{
A *obj;
A ob1;
obj = &ob1; .
obj?>Print();
B ob2;
obj = &ob2;
obj?>Print();
}
A. It prints: AB
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B. It prints: AA
C. It prints: BA
D. It prints: BB
Answer: A
7.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;
A() { x=1; y=2; z=3; }
};
class B: public A {
string z;
public:
void set() { y = 4; z = "John"; }
void Print() { cout << y << A::z; }
};
int main () {
B b;
b.set();
b.Print();
return 0;
}
A. It prints: 4John
B. It prints: 2John
C. It prints: 23
D. It prints: 43
Answer: D
8.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;
}
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A. It prints: 5, 5, 10.00
B. It prints: 5.9, 5, 10
C. It prints: 6, 5, 10
D. It prints: 6, 5, 10.00
Answer: B
9.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. It prints: Bob
C. It prints: 5
D. None of these
Answer: A
10.What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main()
{
const int x=20;
const int *ptr;
ptr = &x;
*ptr = 10;
cout<<*ptr;
return 0;
}
A. It prints: 20
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B. It prints: 10
C. Compilation error at line 8
D. It prints address of ptr
Answer: C
11.What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
void fun(int i);
int main()
{
int i=0;
i++;
for (i=0; i<=5; i++)
{
fun(i);
}
return 0;
}
void fun(int i)
{
if (i==3)
return;
cout << i;
}
A. It prints: 05
B. It prints: 012345
C. It prints: 01245
D. It prints: 0
Answer: C
12.What happens when you attempt to compile and run the following code?
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A. It prints: 3
B. It prints: 4
C. It prints: 0
D. It prints: 6
Answer: D
13.What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class First
{
public:
First() { cout << "Constructor";}
~First() { cout << "Destructor";}
void Print(){ cout<<"from First";}
};
int main()
{
First FirstObject;
FirstObject.Print();
}
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A. It prints: Constructorfrom First
B. It prints: Constructorfrom FirstDestructor
C. It prints: Constructorfrom FirstDestructorDestructor
D. Compilation error at line 16
Answer: B
14.What happens when you attempt to compile and run the following code?
#include <iostream>
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;
}
A. It prints: 0 0
B. It prints: 1 1
C. It prints: 2 0
D. It prints: 2 2
Answer: D
15.What is the output of the program?
#include <iostream>
#include <string>
using namespace std;
int main()
{
string s1[]= {"H" , "t" };
string s;
for (int i=0; i<2; i++) {
s = s1[i];
if (i==0)
s.insert(1,"ow");
else
s.push_back('o');
cout << s;
}
return (0);
}
A. It prints: Hoto
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B. It prints: Ht
C. It prints: toHo
D. It prints: Howto
Answer: D
16.What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main(){
int i = 1;
if (--i==1) {
cout << i;
} else {
cout << i-1;
}
return 0;
}
A. It prints: 0
B. It prints: 1
C. It prints: -1
D. It prints: 2
Answer: C
17.What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
void fun(int);
int main()
{
int a=0;
fun(a);
return 0;
}
void fun(int n)
{
if(n < 2)
{
fun(++n);
cout << n;
}
}
A. It prints: 21
B. It prints: 012
C. It prints: 0
D. None of these
Answer: A
18.What happens when you attempt to compile and run the following code?
#include <iostream>
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#include <string>
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<<s; }
};
int main()
{
A a("Hello world");
B b=a;
b.print();
}
A. It prints: Hello world
B. It prints: Hello
C. Compilation error
D. None of these
Answer: A
19.What is the output of the program?
#include <iostream>
#include <string>
using namespace std;
class First
{
stringname;
public:
First() {
name = "Alan";
}
void Print(){
cout << name;
}
};
int main()
{
First ob1,*ob2;
ob2 = new First();
ob1.Print();
ob2?>Print();
}
A. Garbage value
B. It prints: AlanAlan
C. It prints: Alan
D. It prints: Al
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Answer: B
20.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: 20
B. It prints: 10
C. It prints: 1020
D. It prints: 2010
Answer: A
21.Analyze the code below. If it contains an error, indicate its place in the program.
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A. Error in the for loop
B. Error in the break statement
C. No error
D. Error in the if statement
Answer: C
22.What happens when you attempt to compile and run the following code?
A. It prints: 10
B. It prints: 2+32+3
C. It prints: 7
D. It prints: 22+3
Answer: D
23.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. 1234
B. compilation fails
C. 0210
D. 1322
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Answer: C
24.What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main (int argc, const char * argv[])
{
int x,y;
union t
{
char tab[2];
int i;
};
union t u;
u.tab[0] = 1;
u.tab[1] = 2;
u.i = 0;
x = u.tab[0];
y = u.tab[1];
cout << x << "," << y << "," << u.i;
return 0;
}
A. compilation fails
B. It prints: 0,0,0
C. It prints: 1,2,0
D. None of these
Answer: B
25.What is the output of the program if character “1” 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;
case 3:
throw 'a';
}
}
catch (int e)
{ cout << "int exception. Exception Nr. " << e; }
catch (float e)
{ cout << "float exception. Exception Nr. " << e; }
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catch (...)
{ cout << "An exception occurred."; }
return 0;
}
A. It prints: float exception. Exception Nr. 5.2
B. It prints: int exception. Exception Nr. 20
C. It prints: An exception occurred
D. Compilation Error
Answer: B
26.What happens when you attempt to compile and run the following code?
#include <iostream>
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;
c1.print();
return 0;
}
A. It prints: 1 0
B. It prints: 1 1
C. It prints: 0 0
D. Compilation error
Answer: C
27.What happens when you attempt to compile and run the following code?
#include <iostream>
#include <cstdarg>
using namespace std;
int mult(int f, int s, int t);
int main()
{
cout << mult(1,2,3);
return 0;
}
int mult(int f, int s, int t)
{
int mult_res;
mult_res = f*s*t;
return mult_res;
}
A. It prints: 0
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B. It prints: 6
C. It prints: 2
D. It prints: 3
Answer: B
28.Which of the following statements are true? (Choose two.)
A. Class A's friend's friend is also a friend of class A
B. Friendship is inherited
C. A class may be a friend of many classes
D. A class may have many friends
Answer: C, D
29.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. It will print:"el "
B. The code will not compile.
C. It will print:"Hello "
D. It will print garbage value
Answer: A
30.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. It will print:”123”
B. compilation error
C. It will print:”021”
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D. It will print:”132”
Answer: B
31.What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
struct Person {
string name;
int age;
};
class First
{
Person *person;
public:
First() {person = new Person;
person?>name = "John";
person?>age = 30;
}
void Print(){
cout<<person?>name << " "<< person?>age;
}
};
int main()
{
First t[2];
for (int i=0; i<2; i++)
t[i].Print();
}
A. It prints: 30
B. It prints: John
C. It prints: John 31
D. It prints: John 30John 30
Answer: D
32.If a function, which is not a method, needs to save any value between its subsequent invocations,
this can be done by: (Choose two.)
A. setting a variable declared inside the function with the static modifier
B. setting a parameter of the function
C. setting a variable declared outside the function
D. setting a variable declared inside the function without the static modifier
Answer: A, C
33.What is the output of the program?
#include <iostream>
#include <string>
using namespace std;
int main()
{
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string s1="World";
string s2;
s2="Hello" + s1;
cout << s2;
return (0);
}
A. It prints: HelloWorld
B. It prints: Hello
C. It prints: World
D. Compilation error
Answer: A
34.What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
void fun(char*);
int main()
{
char t[4]={'0', '1', '2', '3'};
fun(&t[2]);
return 0;
}
void fun(char *a)
{
cout << *a;
}
A. It prints: 2
B. It prints: 21
C. It prints: 00
D. It prints: 02
Answer: A
35.Which code, inserted at line 18, generates the output "AB"
#include <iostream>
using namespace std;
class A
{
public:
void Print(){ cout<< "A";}
void Print2(){ cout<< "a";}
};
class B:public A
{
public:
void Print(){ cout<< "B";}
void Print2(){ cout<< "b";}
};
int main()
{
B ob2;
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//insert code here
ob2.Print();
}
A. ob2?>A::Print();
B. ob2.B::Print();
C. ob2?>B::Print();
D. ob2.A::Print();
Answer: D
36.What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main()
{
int i=2;
switch(i)
{
case 1:
cout<<"Hello";
break;
case 2:
cout<<"world";
break;
case 3:
printf("End");
break;
}
return 0;
}
A. It prints: Hello
B. It prints: world
C. It prints: End
D. It prints: E
Answer: B
37.What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int fun(int x);
int main() {
cout << fun(0);
return 0;
}
int fun(int x) {
if(x > 0)
return fun(x-1);
else
return 100;
}
A. It prints: 0
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B. It prints: 10
C. It prints: 100
D. It prints: -1
Answer: C
38.What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int op(int x, int y);
int main()
{
int i=2, j=2, k;
float f=0.3;
k = op(i, j);
cout<< k << "," << op(1, f);
return 0;
}
int op(int x, int y)
{
return x+y;
}
A. It prints: 4,1
B. It prints: 4,0.7
C. It prints: 4,0
D. It prints: 0,4
Answer: A
39.1.What will the variable "age" be in class B?
class A {
int x;
protected:
int y;
public:
int age;
A () {age=5;};
};
class B: public A {
string name;
public:
B () {name="Bob";};
void Print () {
cout << name << age;
}
};
A. public
B. private
C. protected
D. None of these
Answer: A
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