diff --git a/shellSort.cpp b/shellSort.cpp
new file mode 100644
index 0000000..7d23af6
--- /dev/null
+++ b/shellSort.cpp
@@ -0,0 +1,33 @@
+#include<iostream>
+#include<vector> 
+
+void shellSort(std::vector<int>& arr) {
+    int n = arr.size();
+
+    for (int gap = n / 2; gap > 0; gap /= 2) {
+        for (int i = gap; i < n; i++) {
+            int temp = arr[i];
+            int j;
+            
+            for (j = i; j >= gap && arr[j - gap] > temp; j -= gap) {
+                arr[j] = arr[j - gap];
+            }
+            
+            arr[j] = temp;
+        }
+    }
+}
+
+int main() {
+    std::vector<int> arr = {8, 3, 9, 2, 4, 7, 5, 1, 6};
+
+    shellSort(arr);
+
+    std::cout << "Sorted Array: ";
+    for (int num : arr) {
+        std::cout << num << " ";
+    }
+    std::cout << std::endl;
+
+    return 0;
+}