Write a function in C++ which accepts an integer array and its size as arguments and replaces elements having even values with its half and elements having odd values with twice its value

Write a function in C++, which accept an integer array and its size as arguments and swap the elements of every even location with its following odd location.
Example : if an array of nine elements initially contains the elements as
2,4,1,6,5,7,9,23,10
Then the function should rearrange the array as 4,2,6,1,7,5,23,9,10

Given the following class:
char *msg[]={:overflow"."underflow"};
class stack
{
  int top;//the stack pointer
  int stk[5];//the elements
  void err_rep(int e_num)
  {
    cout<   }
        //report error message
  public:
     void init(){top=0;}
        //initialise the stack pointer
     void push(int);
        //put new value in stack
     void pop();
        //get the pop value
};
Define pop outside the stack.In your definition take care of underflow condition. Function pop should invoke error_rep to report underflow

Write a function in C++ to perform push operation on a synamically allocated stack considering the following:
struct Node
{
  int X<Y;
  Node *Link;
};
class STACK
{
  Node *Top;
  public:
     STACK(){Top=NULL:}
     void PUSH();
     void POP();
     STACK();
};
     

Write a function in C++ to perform push operation on a dynamically allocated stack containing real numbers.

Write function PUSHBOOK() in C++ to perform insert operation on adynamic stack,which contains Book_no and Book_Titile.Consider the following defination of NODE,while writing your C++code.
struct NODE
{
  char Book_No;
  char Book_Title[20];
  NODE *Next;
};

Write a function in C++ to insert an element in a dynamically allocated queue,where each node contains a Name(char) as data.Assume the following definition of THENODE for the same:
structTHENODE
{
  char Name[20];
  THENODE *Link;
};

Write a function QUEINS() in C++to insert an element in a dynamically allocated queue containing nodes of the following given structure.
struct Node
{
   int Pid;                      //Product id
   char Pname[20];        //Product name
   Node *Next;
};

Write a function in C++ to perform insert operation in a dynamic queue containing DVD's information (represented with the help of an array of structureDVD).
struct DVD
{
  long No;
  char title[20];
  DVD *Link;
};

Write a function QINSERT() in C++ to perform insert operation on a linked queue, which contains client no and Client name.Consider the following definition of NODE in the code of QINSERT():
struct NODE
{
     long int Cno;              //Client number
     char Cname[20];        //Client name
     NODE *Next;
};