Write definitions for two versions of an overloaded function. This function's first version sum() takes an argument, int array, and returns the sum of all the elements of the passed array. the 2nd version of sum() takes two arguments, an int array and a character ('E' or 'O'). If the passed character is 'E', it returns the sum of even elements of the passed array and if the passed character is 'O', it returns the sum of odd elements. In case of any other character it returns 0 (zero).

#include<iostream.h>

#include<conio.h>

int sum( int a[]); // sum of all elements of an array

int sum(int a[], char ch); // sum of odd or even elements of an array, depending on choice

void main()

{

int num[10];

cout<< "\n Enter 10 integers : ";

for(int i = 0;  i < 10 ;  i++ )

cin >> num[i];

/* Sum of all 10 integers */

int s = sum(num);

cout<< "\n The Sum of all 10 integers = " << s;

/* Sum of all the even numbers out of all the 10 integers */

s = sum(num, 'E');

cout<< "\n The Sum of all even numbers out of all 10 integers = " << s;

/* Sum of all the odd numbers out of all the 10 integers */

s = sum(num, 'O');

cout<< "\n The Sum of all odd numbers out of all 10 integers = " << s;

/* No result...for wrong choice */

s = sum(num , 'X');

cout<< "\n No Sum for wrong choice . Hence the result  = " << s;

getch();

}

// Function definition of FIRST sum function

 int sum(int arr[])

{

int s = 0;

for ( int i = 0; i <10 ; i++ )

s = s+ arr[i];

return s;

}

// Function definition of SECOND sum function

int sum(int arr[], char a)

{

int se = 0, so = 0, s = 0;

switch(a)

{

case 'E':

case 'e':

             for ( int i = 0; i <10 ; i++ )

               {

                     if(arr[i]%2 == 0)

                        se = se+ arr[i];

               }

              s = se;

              break;

case 'O':

case 'o':

             for ( int i = 0; i <10 ; i++ )

             {

              if(arr[i]%2 ! = 0)

                 so = so + arr[i];

             }

            s = so;

            break;

default :

           s = 0;

}

return s;

}