1 files changed, 19 insertions, 0 deletions
diff --git a/Week04/Exercise13.cpp b/Week04/Exercise13.cpp
new file mode 100644
index 0000000..953ee61
--- /dev/null
+++ b/Week04/Exercise13.cpp
@@ -0,0 +1,19 @@
+#include <iostream>
+
+int main() {
+    unsigned int fib_index;
+    std::cin >> fib_index;
+
+    unsigned int prev = 0;
+    unsigned int curr = 1;
+
+    for (unsigned int index = 1; index <= fib_index; index++) {
+        unsigned int old_curr = curr;
+        curr += prev;
+        prev = old_curr;
+    }
+
+    std::cout << prev;
+
+    return 0;
+}