Reference no: EM131392849

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. 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	Grades
<50	F
≥ 50<60	D
≥ 60<75	C
≥ 75<90	B
≥ 90<100	A