c++中用sort函数对数组中的数据进行排序

#include <iostream>
#include<algorithm>
using namespace std;

int main()
{
	int arr[5];
	cout << "请输入五只小猪的体重： ";
	for (int i = 0; i < 5; i++)
	{
		cin >> arr[i];
	}
	sort(arr, arr + 5);
	cout << endl << "五只小猪的体重按照从小到大的顺序排列为： ";
	for (int i = 0; i < 5; i++)
	{
		cout << arr[i] << "; ";
	}
	cout << endl;

	cout << endl << "五只小猪的体重按照从大到小的顺序排列为： ";
	sort(arr, arr + 5, greater<int>());

	for (int i = 0; i < 5; i++)
	{
		cout << arr[i] << "; ";
	}
	cout << endl;
	system("pause");
	return 0;
}