Add Fizz-Buzz in C* (#5161)

Author: samkosal

archive/c/c-star/fizz-buzz.cx

@@ -0,0 +1,13 @@
+void main()
+{
+    for (int i = 1; i <= 100; i++) {
+    if (i % 15 == 0)
+        println("FizzBuzz");
+    else if (i % 3 == 0)
+        println("Fizz");
+    else if (i % 5 == 0)
+        println("Buzz");
+    else
+        println(i);
+    }
+}