From df03f1370053c500ffc81f96b82a5c847948246a Mon Sep 17 00:00:00 2001
From: Vahagn Khachatryan <vkhachatrya5@bloomberg.net>
Date: Fri, 23 Sep 2016 13:27:02 -0400
Subject: [PATCH] Integral type addition is converted to int.

---
 cpp/char_plus_char_is_int.cpp | 48 +++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 cpp/char_plus_char_is_int.cpp

diff --git a/cpp/char_plus_char_is_int.cpp b/cpp/char_plus_char_is_int.cpp
new file mode 100644
index 0000000..d41b64f
--- /dev/null
+++ b/cpp/char_plus_char_is_int.cpp
@@ -0,0 +1,48 @@
+/* Check cf5-opt.vim defs.
+VIM: let g:lcppflags="-std=c++11 -O2 -pthread"
+VIM: let g:wcppflags="/O2 /EHsc /DWIN32"
+VIM: let g:cppflags=g:Iboost.g:Itbb
+VIM: let g:ldflags=g:Lboost.g:Ltbb.g:tbbmalloc.g:tbbmproxy
+VIM: let g:ldlibpath=g:Bboost.g:Btbb
+VIM: let g:argv=""
+VIM-: let g:cf5output=0
+*/
+#include <iostream>
+
+char * f( unsigned long ){ return  "unsigned long"; }
+char * f( unsigned int ){ return  "unsigned int"; }
+char * f( unsigned short ){ return  "unsigned short"; }
+char * f( unsigned char ){ return  "unsigned char"; }
+char * f( long ){ return  "long"; }
+char * f( int ){ return  "int"; }
+char * f( short ){ return  "short"; }
+char * f( char ){ return  "char"; }
+
+template <typename T>
+char * g() {
+    return f( T(1) + T(2) );
+}
+
+template <typename T1, typename T2>
+char * h() {
+    return f( T1(1) + T2(2) );
+}
+
+int main ( void )
+{
+    std::cout << "char+char="   << g<char>() << std::endl;
+    std::cout << "short+short=" << g<short>() << std::endl;
+    std::cout << "int+int="     << g<int>() << std::endl;
+    std::cout << "long+long="   << g<long>() << std::endl;
+    std::cout << "uchar+uchar=" << g<unsigned char>() << std::endl;
+    std::cout << "ushort+ushort=" << g<unsigned short>() << std::endl;
+    std::cout << "uint+uint="   << g<unsigned>() << std::endl;
+    std::cout << "ulong+ulong=" << g<unsigned long>() << std::endl;
+    std::cout << std::endl;
+    std::cout << "uchar+char=" << h<unsigned char,char>() << std::endl;
+    std::cout << "uint+int=" << h<unsigned int,int>() << std::endl;
+    std::cout << "ulong+long=" << h<unsigned long,long>() << std::endl;
+    std::cout << "ulong+int=" << h<unsigned long,int>() << std::endl;
+    std::cout << "uint+long=" << h<unsigned int,long>() << std::endl;
+    return 0;
+}