feat: test auto keyword

chapters/chapter_02/CMakeLists.txt

@@ -1,5 +1,6 @@
-add_library(chapter_02 src/initlist.cpp src/null.cpp src/constexp.cpp
-                       src/ifswitch.cpp src/structured_binding.cpp)
+add_library(
+  chapter_02 src/initlist.cpp src/null.cpp src/constexp.cpp src/ifswitch.cpp
+             src/structured_binding.cpp src/type_inference.cpp)
 
 target_compile_features(chapter_02 PUBLIC cxx_std_20)
 

chapters/chapter_02/include/type_inference.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include "chapter_interface.h"
+
+class TypeInferenceTest : public ChapterTest {
+public:
+  virtual void run() override;
+  virtual const char *name() const override { return "Type inference test"; }
+};

chapters/chapter_02/src/type_inference.cpp

@@ -0,0 +1,14 @@
+#include "type_inference.h"
+#include <iostream>
+#include <vector>
+
+void TypeInferenceTest::run() {
+
+  const std::vector<int> int_vec = {1, 2, 3, 4, 5};
+
+  std::cout << "vector iterator with auto: ";
+  for (auto it = int_vec.cbegin(); it != int_vec.cend(); ++it) {
+    std::cout << *it << " ";
+  }
+  std::cout << std::endl;
+}

src/main.cpp

@@ -8,6 +8,7 @@
 #include "initlist.h"
 #include "null.h"
 #include "structured_binding.h"
+#include "type_inference.h"
 #include "version.h"
 
 int main(int argc, char **argv) {
@@ -22,6 +23,7 @@ int main(int argc, char **argv) {
   chapter_2_tests.emplace_back(std::make_unique<ConstExpTest>());
   chapter_2_tests.emplace_back(std::make_unique<InitListTest>());
   chapter_2_tests.emplace_back(std::make_unique<StructuredBindingTest>());
+  chapter_2_tests.emplace_back(std::make_unique<TypeInferenceTest>());
 
   for (auto &test : chapter_2_tests) {
     std::cout << "\n" << test->name() << ":" << std::endl;