1 files changed, 17 insertions, 0 deletions
diff --git a/Week13/Exercise03.cpp b/Week13/Exercise03.cpp
new file mode 100644
index 0000000..9dc4733
--- /dev/null
+++ b/Week13/Exercise03.cpp
@@ -0,0 +1,17 @@
+#include <iostream>
+
+unsigned digitSum(unsigned x) {
+	if (x == 0)
+		return 0;
+	else
+		return x % 10 + digitSum(x / 10);
+}
+
+int main() {
+	unsigned num;
+	std::cin >> num;
+
+	std::cout << digitSum(num) << std::endl;
+
+	return 0;
+}