Rotating arrays

[batulok]

I'm trying to figure out on how to rotate arrays. I got information from a file and put it into an array. Now I'm trying to figure out how to rotate the array to the right. The file reads:

9
23 19
-3 7892 12
7 4000 0 44

The first number states how many numbers there are the rest of the numbers are part of the array. Any ideas? Help? Thanks!

#include <iostream>
#include <fstream>
#include <cstdlib>

using namespace std;

int main()
{
	const int ARRAY_SIZE = 25;
	int numbers[ARRAY_SIZE];
	char fname[100];
	ifstream inputFile;
	int header;
	int count = 0;



	cout << "Please enter the name of the input file: ";
		cin >> fname;

		inputFile.open(fname);
		if(!inputFile)
		{
			cout << "Input file not found" << endl;
			exit(0);
		}

		inputFile >> header;
		cout << "The amount of numbers in the file is " << header << endl;

		while (count < ARRAY_SIZE && inputFile >> numbers[count])
			count++;

		inputFile.close();
		cout << "The numbers are: ";
		for (int index = 0; index < count; index++)
			cout << numbers[index] << " ";
		cout << endl;
                cout << "The array elements rotated by one are:\n";



		return 0;
	}

[batulok]

In other words the array should go from: 23 19 -3 7892 12 7 4000 0 44 to 44 23 19 -3 7892 12 7 4000 0

[batulok]

bump

[Cubbi]

Are you not allowed to use std::rotate?

[heebleworp]

The rotation can be accomplished by swapping array values and using a variable to temporarily store overwritten values. For the array
int numbers[3] = {1, 2, 3, 4};
The rotation could work something like this:
1) swap 1 and 2. We have {2, 1, 3, 4}
2) swap 2 and 3. We have {3, 1, 2, 4}
3) swap 3 and 4. We have {4, 1, 2, 3}

Notice that all the swaps involve the first value of the array. I'll leave it to you to write the code.