Reference no: EM131394336

Q1. What is a copy constructor in c++? How it is declared ? Explain with a suitable example.

Q2. How can the unary operator ++ be overloaded in C++ for postfix operation ? Demonstrate with a suitable example.

Q3.3. How does C++ help with the trade-off of safety vs. usability?

Q4. What is the output of following program? Justify your answer.

#include <iostream>

using namespace std;

class Test

{

    static int x;

public:

    Test() { x++; }

    static int getX() {return x;}

};

int Test::x = 0;

int main()

{

    cout << Test::getX() << " ";

    Test t[5];

    cout << Test::getX();

}

Q5. What is difference between a template and a macro? Give suitable example of each.

Q6. Implement a function f that takes three arguments: pointers to two integer arrays A and B and the size N. It then populates B where B[i] is the product of all A[j] where j ≠ i.

For example : if A = { 2,1,5,9 } then B will be { 45,90,18,10 }.

Q7. How can we create an abstract class in C++ ? Explain with suitable example.

Q8. Write a C++ program to copy one file into another.

Q9. What will be the result of following expressions when they are executed in sequence?

#include<iostream.h>

#include<conio.h>

 void main()

{

 int a = 10, b = 20,c,d,e,f;

 c = ++a + ++a + ++a;

 b=b++ + b++;

 e=a++ + --a + b--;

 f=b-- & ++a + b++;

 cout<<c<<d<<e<<f;

 getch();

}

Q10. Write a C++ program using classes and objects to simulate result preparation system for 20students. The data available for each student includes:Name (includes first, mid and last name each of size 20 characters), Rollno, Marks in 3 subjects. The percentage marks and grade are to be calculated from the following information:

Percentage marks                   grade

 <50                                       F

 ≥ 50<60                                 D

≥ 60<75                                  C

≥ 75<90                                  B

≥ 90<100                                A