C++ 数组元素逆序

#include <iostream>
using namespace std;
int main() {
	
	
	int arr[5] = {1,2,3,4,5};

	int arrLength = sizeof(arr) / sizeof(arr[0]);
	int start = 0;
	int end = arrLength - 1;

	for (int i = 0; i < arrLength; i++)
	{
		cout << arr[i] << endl;
		int tmp = arr[start];
		arr[start] = arr[end];
		arr[end] = tmp;

		if (start < end) {
			start++;
			end--;
		}
	}

	cout << "=====================" << endl;

	for (int i = 0; i < arrLength; i++)
	{
		cout << arr[i] << endl;
	}



	system("pause");
	return 0;
}