Question

9.11: Array Expander

Answer 1

The Array Expander is an illustration of arrays and functions.

• Arrays are variables that stores multiple values
• Functions are named statements that are executed when called

The Array Expander program

The Array Expander program written in C++, where comments are used to explain each action is as follows:

#include <iostream>

using namespace std;

//This declares the Array Expander function

int* ArrayExpander(int *oldArr, int size){

   //This declares the new array

   int *newArr = new int[size * 2];

//This iteration sets values into the new array

   for (int i = 0; i < size * 2; i++) {

       if(i < size){

           *(newArr+i) = *(oldArr+i);

       }

       else{

           *(newArr+i) = 0;

       }

   }

//This returns a pointer to the new array

   return newArr;

}

//The main method begins here

int main(){

//This declares the length of the array, N

   int N;    

//This gets input for N

   cin>>N;

   int initArr[N];

//If N is between 1 and 50

   if(N > 0 && N <=50){

//This iteration gets values for the array

       for(int i = 0; i<N; i++){

           cin>>initArr[i];

       }

//This calls the Array Expander function

   int *ptr = ArrayExpander(initArr, N);

//This iteration prints the elements of the new array

   for (int i = 0; i < N*2; i++) {

       cout << ptr[i] << " ";

   }

   }

  return 0;

}

Read more abou C++ programs at:

brainly.com/question/27246607