What will be the output of the following C++ code?

How many runtime error messages are associated with exceptions?

What is the output of the following C program?

 Which of the following is a static polymorphism mechanism?

What is the value of r in the following code?

#include <stdio.h>

void main()

{

int x = 4;

int *p = &x;

int *k = p++;

int r = p - k;

printf("%d", r);

}

What is the output of the following C program?

int main()

{

  int arr[] = {0, 1, 2, 3, 4};

  int *ptr, i;

  for (ptr = arr + 4; ptr >= arr; ptr--)

    printf("%d ", *ptr);

}

 Let A[1...n] be an array of n distinct numbers. If i < j and A[i] > A[j], then the pair (i, j) is called an inversion of A. What is the expected number of inversions in any permutation on n elements ? 

 When will we use the function overloading?

What will be the output of the following C code?

main()

{

char s = '2';

switch(s)

{

case '1': printf("hi");

case '2': printf("hello");

default: printf("I am Parv");

}

printf("hello how are u");

}

#include <iostream>
using namespace std;

class CVector {
 public:
   int x,y;
   CVector () {}
   CVector (int a, int b) : x(a), y(b) {}
};


CVector operator+ (const CVector& lhs, const CVector& rhs) {
 CVector temp;
 temp.x = lhs.x + rhs.x;
 temp.y = lhs.y + rhs.y;
 return temp;
}

int main () {
 CVector foo (3,1);
 CVector bar (1,2);
 CVector result;
 result = foo + bar;
 cout << result.x << ',' << result.y << '\n';
 return 0;
}