Start 6B (much easier than 6A)

1 files changed, 29 insertions, 0 deletions

diff --git a/ee1301/wk6/hw6_directory/strap012_HW6B.cpp b/ee1301/wk6/hw6_directory/strap012_HW6B.cpp
new file mode 100644
index 0000000..5b15ca0
--- /dev/null
+++ b/ee1301/wk6/hw6_directory/strap012_HW6B.cpp
@@ -0,0 +1,29 @@
+#include <iostream>
+
+int ff(int x);
+
+int main() {
+  int value = -1;
+  do {
+  std::cout << "Please enter a value of x: ";
+    std::cin >> value;
+  } while (value<0);
+  std::cout << "Beginning calculation of ff(x)...\n";
+  int ffx = ff(value);
+  std::cout << "Calcuation complete, ff(x) = " << ffx << std::endl;
+}
+
+int ff(int x) {
+  if (x > 1) {
+    if (x%2 == 0) {
+      std::cout << "Calling ff(" << x/2 << ")\n";
+      return x*ff(x/2);
+    } else {
+      std::cout << "Calling ff(" << x-2 << ")\n";
+      return x*ff(x-2);
+    }
+  } else {
+    std::cout << "Returning from ff(" << x << ") = 1\n";
+    return 1;
+  }
+}