4- Print the array in reverse . Your program (via a function) should create a ne

Question

4- Print the array in reverse . Your program (via a function) should create a new copy of the array, except that the elements should be in reverse. The function should return a pointer to the new array. Then call printValues to show the values of the new array.

I need help trying to get the reverse values. can someone do it with the code provided.

#include <iostream>;

#include <fstream>;

#include <ctime>;

#include <cstdlib>;

using namespace std;

void RandomNumbers();

int* ReadFile(int&);

void PrintValue(const int*, int);

int* Keynumber(const int*, int, int&);

int main()

{

int* arr = nullptr;

int size;

RandomNumbers();

arr = ReadFile(size);

cout << "Here are the numbers from the file" << endl;

PrintValue(arr, size);

int search;

int* searchresults = nullptr;

searchresults = Keynumber(arr, size, search);

PrintValue(searchresults, search);

system("Pause");

return 0;

}

void RandomNumbers()

{

srand(time(NULL));

ofstream banana;

int RNG;

int num;

banana.open("beta.txt");

for (int x = 0; x < rand() % (150 - 100) + 100; x++)

{

RNG = rand() % (200 - 1) + 1;

banana << RNG << endl;

}

num = rand() % (200 - 1) + 1;

banana << num;

banana.close();

}

int* ReadFile(int &size)

{

ifstream banana;

banana.open("beta.txt");

int count = 0;

int orange;

int *arr;

if (banana.is_open())

{

while (!banana.eof())

{

banana >> orange;

count++;

}

size = count;

banana.seekg(0, banana.beg);

arr = new int[size];

int i = 0;

while (!banana.eof())

{

banana >> arr[i];

i++;

}

return arr;

}

else

cout << " Unable to open file";

banana.close();

}

void PrintValue(const int* banana, int size)

{

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

{

cout << (*(banana + i)) << " ";

}

cout << endl;

}

int* Keynumber(const int *banana, int size, int &searchSize)

{

int keynumber;

int *searchResults;

cout << " Enter the key value : ";

cin >> keynumber;

int count = 0;

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

{

if (*(banana + i) > keynumber)

count++;

}

searchResults = new int[count];

searchSize = count;

count = 0;

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

{

if (*(banana + i) > keynumber)

{

*(searchResults + count) = *(banana + i);

count++;

}

}

cout << "Array with numbers > " << keynumber << endl;

return searchResults;

}

Explanation / Answer

#include <iostream>

#include <fstream>

#include <ctime>

#include <cstdlib>

using namespace std;

void RandomNumbers();

int* ReadFile(int&);

void PrintValue(const int*, int);

int* Keynumber(const int*, int, int&);

// return the reverse array

int* reverse(int *, int);

int main()

{

int* arr = nullptr;

int size;

RandomNumbers();

arr = ReadFile(size);

cout << "Here are the numbers from the file" << endl;

PrintValue(arr, size);

// get the reverse array

int *rev_arr = reverse(arr, size);

cout<<"Reverse array is : ";

// print the reverse array

PrintValue(rev_arr, size);

int search;

int* searchresults = nullptr;

searchresults = Keynumber(arr, size, search);

PrintValue(searchresults, search);

system("Pause");

return 0;

}

void RandomNumbers()

{

srand(time(NULL));

ofstream banana;

int RNG;

int num;

banana.open("beta.txt");

for (int x = 0; x < rand() % (150 - 100) + 100; x++)

{

RNG = rand() % (200 - 1) + 1;

banana << RNG << endl;

}

num = rand() % (200 - 1) + 1;

banana << num;

banana.close();

}

int* ReadFile(int &size)

{

ifstream banana;

banana.open("beta.txt");

int count = 0;

int orange;

int *arr;

if (banana.is_open())

{

while (!banana.eof())

{

banana >> orange;

count++;

}

size = count;

banana.seekg(0, banana.beg);

arr = new int[size];

int i = 0;

while (!banana.eof())

{

banana >> arr[i];

i++;

}

return arr;

}

else

cout << " Unable to open file";

banana.close();

}

void PrintValue(const int* banana, int size)

{

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

{

cout << (*(banana + i)) << " ";

}

cout << endl;

}

int* Keynumber(const int *banana, int size, int &searchSize)

{

int keynumber;

int *searchResults;

cout << " Enter the key value : ";

cin >> keynumber;

int count = 0;

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

{

if (*(banana + i) > keynumber)

count++;

}

searchResults = new int[count];

searchSize = count;

count = 0;

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

{

if (*(banana + i) > keynumber)

{

*(searchResults + count) = *(banana + i);

count++;

}

}

cout << "Array with numbers > " << keynumber << endl;

return searchResults;

}

// return the reverse array

int* reverse(int *arr, int size)

{

    int *rev_arr = new int[size];

   

    int i;

   

    // copy content of arr to rev_ar in reverse order

    for( i = 0 ; i < size ; i++ )

        rev_arr[ size - i - 1 ] = arr[i];

       

    return rev_arr;

}

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