Create Reverse array

Reverse array

+#include <iostream>
+using namespace std;
+
+int main() {
+	//code
+	int t;
+     cin>>t;
+     
+     while(t--)
+     {
+         int n;
+         cin>>n;
+         int arr[n];
+         for(int i = 0; i < n; i++)
+          cin>>arr[i];
+          
+          for(int i = n-1; i >= 0; i--)
+           cout<<arr[i]<<" ";
+           
+           cout<<endl;
+     }
+// 	return 0;
+	return 0;
+}
+
+//another implementation
+#include <iostream>
+using namespace std;
+
+void reverse(int arr[], int start, int end)
+{
+    int temp;
+    temp = arr[start];
+    arr[start] = arr[end];
+    arr[end] = temp;
+    reverse(arr, start+1, end+1);
+}
+int main() {
+    int arr[] = {5 , 8, 10, 13};
+    int n = sizeof(arr)/sizeof(arr[0]);
+    int start = 0, end = n-1;
+    cout<<reverse(arr, start, end);
+    return 0;
+}