From d43ce9e11606a75492abc4036ca6ae76027606e0 Mon Sep 17 00:00:00 2001
From: Ashish Ratnawat <ashishratnawat452@gmail.com>
Date: Fri, 25 Oct 2019 13:18:02 +0530
Subject: [PATCH] created file for xor of three numbers

To make the sum of three numbers equal to the xor of three number
---
 equalsum_and_XOR.cpp | 47 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 equalsum_and_XOR.cpp

diff --git a/equalsum_and_XOR.cpp b/equalsum_and_XOR.cpp
new file mode 100644
index 0000000..297ce17
--- /dev/null
+++ b/equalsum_and_XOR.cpp
@@ -0,0 +1,47 @@
+#include <bits/stdc++.h> 
+using namespace std; 
+  
+// Defining ull to unsigned long long int 
+typedef unsigned long long int ull; 
+  
+// Function to calculate power of 3 
+ull calculate(int bit_cnt) 
+{ 
+    ull res = 1; 
+    while (bit_cnt--) { 
+        res = res * 3; 
+    } 
+  
+    return res; 
+} 
+  
+// Function to return the count of the 
+// unset bit ( zeros ) 
+int unset_bit_count(ull n) 
+{ 
+    int count = 0; 
+    while (n) { 
+  
+        // Check the bit is 0 or not 
+        if ((n & 1) == 0) 
+            count++; 
+        // Right shifting ( dividing by 2 ) 
+        n = n >> 1; 
+    } 
+    return count; 
+} 
+  
+// Driver Code 
+int main() 
+{ 
+    ull n; 
+    n = 2; 
+  
+    int count = unset_bit_count(n); 
+  
+    ull ans = calculate(count); 
+  
+    cout << ans << endl; 
+  
+    return 0; 
+}