In C++ Write a function named isum that takes two arguments - an int array named x, followed by an int named n - and returns an int value that is the sum of the first n elements in x. Example function prototype here:

int isum(int x[], int n); 

also Write another function named avg that takes two arguments - an int array named x, followed by an int named n - and returns a double value equal to the average (arithmetic mean) of the first n elements in x. Example function prototype here:

double avg(int x[], int n); 

Must be able to be put within this program skeleton:

Sample output:

#include using namespace std; // prototypes of functions to be pasted below main int isum(int x[], int n); double avg(int x[], int n); int main) i const int MAXN 100; int a[MAXN], input; double average, diff; // fill array with data from user, and count items cout > input; while cin.good() && n > input; SET average TO AVERAGE VALUE OF FIRST n ELEMENTS OF a */ /* print summary results and header for diffs */ cout