diff --git a/solutions/cpp/difference-of-squares/1/difference_of_squares.cpp b/solutions/cpp/difference-of-squares/1/difference_of_squares.cpp
new file mode 100644
index 0000000..602012e
--- /dev/null
+++ b/solutions/cpp/difference-of-squares/1/difference_of_squares.cpp
@@ -0,0 +1,22 @@
+#include "difference_of_squares.h"
+
+namespace difference_of_squares {
+    int sum_of_squares(int number) {
+        int sum = 0;
+        for (int i = 1; i <= number; i++) {
+            sum += i * i;
+        }
+        return sum;
+    }
+
+    int square_of_sum(int number) {
+        int sum = 0;
+        for (int i = 1; i <= number; i++) {
+            sum += i;
+        }
+        return sum * sum;
+    }
+    int difference(int number) {
+        return square_of_sum(number) - sum_of_squares(number);
+    }
+}  // namespace difference_of_squares
diff --git a/solutions/cpp/difference-of-squares/1/difference_of_squares.h b/solutions/cpp/difference-of-squares/1/difference_of_squares.h
new file mode 100644
index 0000000..2ebe440
--- /dev/null
+++ b/solutions/cpp/difference-of-squares/1/difference_of_squares.h
@@ -0,0 +1,9 @@
+#pragma once
+
+namespace difference_of_squares {
+    int square_of_sum(int n);
+    int sum_of_squares(int n);
+    int difference(int n);
+// TODO: add your solution here
+
+}  // namespace difference_of_squares