fibbonaci

fibbonaci.cpp

@@ -0,0 +1,33 @@
+#include <iostream>
+
+unsigned int fib(unsigned int &n);
+
+unsigned int fib(unsigned int &n) {
+
+    unsigned int t = 0;
+    unsigned int r = 0;
+
+    for (unsigned int i = 0; i <= n; i++) {
+        if (i != 0 && i < 3) {
+            t = 1;
+            r = 0;
+        } else if (i > 4) {
+            t = r - t;
+        }
+
+        r = t + r;
+    }
+
+    return r;
+
+}
+
+int main() {
+    unsigned int n;
+    std::cout << "Bitte geben sie einen Wert ein:\n";
+    std::cout << "n = ";
+    std::cin >> n;
+    std::cout << "Fib(" << n << ")=" << fib(n) << std::endl;
+    return 0;
+}
+