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print all the subarrays from the give array where sum is equal to 0.cpp

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+#include <iostream>
+#include <unordered_map>
+using namespace std;
+
+template<size_t  n>
+int printallSubarrays(int (&A)[n])
+{
+    unordered_multimap <int , int> map;
+    map.insert(pair<int,int>(0,-1));
+    int sum = 0;
+    for (int i = 0; i < n ; i++) {
+
+        sum += A[i];
+        if(map.find(sum) != map.end()){
+            auto it = map.find(sum);
+            while(it != map.end() && it->first == sum){
+                cout << "Subarray [" << it->second + 1 << ".." << i << "]\n";
+                it++;
+            }
+
+        }
+        map.insert(pair<int, int>(sum, i));
+
+    }
+
+
+
+}
+
+// main function
+int main()
+{
+    int arr[] = { 3, 4, -7, 3, 1, 3, 1, -4, -2, -2 };
+    printallSubarrays(arr);
+    return 0;
+}