Predict output of the following program C #include <stdio.h> int main() { printf(" ew_c_question b "); printf("geeksforgeeks"); getchar(); return 0; }

Depends on terminal configuration

What is the output of following program? CPP #include <iostream> using namespace std; class Point { int x, y; public: Point(const Point &p) { x = p.x; y = p.y; } int getX() { return x; } int getY() { return y; } }; int main() { Point p1; Point p2 = p1; cout << "x = " << p2.getX() << " y = " << p2.getY(); return 0; }

x = garbage value y = garbage value

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C++ Constructors

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Question 1

When a copy constructor may be called?

When an object of the class is returned by value.
When an object of the class is passed (to a function) by value as an argument.
When an object is constructed based on another object of the same class
When compiler generates a temporary object.
All of the above

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Question 2

Predict output of the following program

#include <stdio.h> int main() {    printf("\new_c_question\b\r");    printf("geeksforgeeks");     getchar();    return 0; }

ew_c_question
geeksforgeeks
new_c_ques
geeksforgeeks
geeksforgeeks
Depends on terminal configuration

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Question 3

Output of following program?

C++

#include <iostream> using namespace std;  class Point {     Point() { cout << "Constructor called"; } };  int main() {     Point t1;     return 0; }

Runtime Error
None of these
Constructor called
Compiler Error

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Question 4

Output of following C++ code will be?

C++

#include <iostream> using namespace std;  class X  { public:     int x; };  int main() {     X a = {10};     X b = a;     cout << a.x << " " << b.x;     return 0; }

Compiler Error
10 followed by Garbage Value
10 10
10 0

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Question 5

Predict the output of the following program:

C++

#include <iostream> using namespace std;  class GfG {     public:     int val;          GfG(): val(11) {}     GfG(int x): val(x) {};     GfG(const GfG& other): GfG(other.val) {} };  int main() {     GfG gfg1(22);     GfG gfg2(gfg1);     cout << gfg2.val;     return 0; }

0
22
Compiler Error
11

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Question 6

What is the output of following program?

CPP

#include <iostream> using namespace std;  class Point {     int x, y; public:    Point(const Point &p) { x = p.x; y = p.y; }    int getX() { return x; }    int getY() { return y; } };  int main() {     Point p1;     Point p2 = p1;     cout << "x = " << p2.getX() << " y = " << p2.getY();     return 0; }

x = garbage value y = garbage value
x = 0 y = 0
Compiler Error

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Question 7

Predict the output of the following program:

C++

#include <iostream> using namespace std;  class GfG {     public:     int val;          GfG(int x = 22) {         this->val = x;     } };  int main() {     GfG gfg;     cout << gfg.val;     return 0; }

0
22
Runtime Error
Compiler Error

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Question 8

Predict the output of the following program?

C++

#include <iostream> using namespace std;  class GfG {     GfG() {         cout << "Constructor Called" << endl;     } };  int main() {     cout << "Main Started" << endl;     return 0; }

Compiler Error
Main Started
Constructor Called
Constructor Called
Main Started
Main Started

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Question 9

Implicit return type of a class constructor is:

not of class type itself
class type itself
a destructor of class type
a destructor not of class type

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Question 10

We must use initializer list in a constructor when

There is a reference variable in class
There is a constant variable in class
There is an object of another class. And the other class doesn't have default constructor.
All of the above

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