The document provides a C++ program that defines a function to reverse the elements of an integer array. The function takes the array and its size as arguments, dynamically allocates new memory for a copy of the array, and copies the elements from the input array to the new array in reverse order. It returns a pointer to the new reversed array. The main function demonstrates calling this reverseArray function by inputting an array, displaying it, passing it to reverseArray, and displaying the reversed array.

1. In C++ please,
Problem 1: Write a function that accepts an int array and the array’s size as arguments. The
function should create a copy of the array (using dynamic allocation), except that the element
values should be reversed in the copy. The function should return a pointer to the new array.
Demonstrate the function in a complete program.
Solution
ReverseArray.cpp
#include <iostream>
using namespace std;
int* reverseArray(int a[], int size);
int main()
{
int n;
cout << "Enter Array Size " << endl;
cin >> n;
int a[n];
for(int i=0; i<n; i++){
cout<<"Enter Element :"<<endl;
cin >> a[i];
}
cout<<"Array Before Reverse is "<<endl;
for(int i=0; i<n;i++){
cout<<a[i]<<" ";
}
cout<<endl;
int *reverseArr = reverseArray(a, n);
cout<<"Reverse Array is "<<endl;
for(int i=0; i<n;i++){
cout<<reverseArr[i]<<" ";
}

2. cout<<endl;
return 0;
}
int* reverseArray(int a[], int size){
int *array;
int j=0;
array=(int *) malloc(size*sizeof(int));
for(int i=size-1;i>=0; i--,j++){
array[j]= a[i];
}
return array;
}
Output:
Enter Array Size
5
Enter Element :
3
Enter Element :
4
Enter Element :
2
Enter Element :
1
Enter Element :
5
Array Before Reverse is
3 4 2 1 5
Reverse Array is
5 1 2 4 3