Extend the program below so that it also calculates the average of all numbers between 18 and 30. Use a separate loop. Try as well to: 1) Use functions 2) make the program flexible enough to compute the average of values within any other range.

Code: #include  using namespace std; void readData(int, *data, int sz){ } int main(){ //set size of array and create it int sz = 0; int arr[sz]; cout<<"enter num data: "<>sz; int *data = new int[sz]; //int data[5]; cout<<"Data is "<>data[i]; } //loop 2:calculate the average int sum = 0; for (int i=0; i