revision #1: 更新第二章中已维护的代码

code/1/1.1.c.and.cpp

@@ -0,0 +1,20 @@
+//
+// 1.1.cpp
+//
+// chapter 1 introduction
+// modern cpp tutorial
+//
+// created by changkun at changkun.de
+//
+
+#include "foo.h"
+#include <iostream>
+#include <functional>
+
+int main() {
+    // use lambda expression
+    [out = std::ref(std::cout << "Result from C code: " << add(1, 2))](){
+        out.get() << ".\n";
+    }();
+    return 0;
+}