cpplang.hpp

chronolaw · chronolaw · commit 2650a8224c6e · 2020-04-09T21:25:26.000+08:00
diff --git a/section5/cpplang.hpp b/section5/cpplang.hpp
@@ -0,0 +1,38 @@
+// Copyright (c) 2020 by Chrono
+
+#ifndef _CPP_LANG_HPP
+#define _CPP_LANG_HPP
+
+#include <cassert>
+
+#include <iostream>
+#include <string>
+#include <vector>
+#include <set>
+#include <map>
+#include <unordered_set>
+#include <unordered_map>
+#include <algorithm>
+
+//never 'using namespace std;' in c++ header
+
+// must be C++11 or later
+#if __cplusplus < 201103
+#   error "C++ is too old"
+#endif  // __cplusplus >= 201402
+
+static_assert(
+    __GNUC__ >= 4, "GCC is too old");
+
+#if __cplusplus >= 201402
+#   define  CPP_DEPRECATED [[deprecated]]
+#else
+#   define  CPP_DEPRECATED [[gnu::deprecated]]
+#endif  // __cplusplus >= 201402
+
+// macro for convienient namespace
+#define BEGIN_NAMESPACE(x)  namespace x {
+#define END_NAMESPACE(x)    }
+
+#endif  //_CPP_LANG_HPP
+
diff --git a/section5/srv.cpp b/section5/srv.cpp
@@ -0,0 +1,24 @@
+// Copyright (c) 2020 by Chrono
+//
+// g++ srv.cpp -std=c++11 -o a.out;./a.out
+// g++ srv.cpp -std=c++14 -o a.out;./a.out
+// g++ srv.cpp -std=c++14 -I../common -o a.out;./a.out
+
+//#include <iostream>
+
+#include "cpplang.hpp"
+
+int main()
+{
+    using namespace std;
+
+    cout << "c++ version = " << __cplusplus << endl;
+
+    cout << "gcc version = " << __VERSION__ << endl;
+
+    cout << "gcc major = " << __GNUC__ << endl;
+    cout << "gcc minor = " << __GNUC_MINOR__ << endl;
+    cout << "gcc patch = " << __GNUC_PATCHLEVEL__ << endl;
+
+    cout << "libstdc++ = " << __GLIBCXX__ << endl;
+}
