因此，C++11引入nullptr作为空指针的统一表示，使代码更加类型安全，消除了空指针和整数之间的歧义，并提高...
} root@ubuntu:~/c++# g++ -std=c++11null.cpp -onullnull.cpp: In function ‘intmain()’:null.cpp:14:17: error: call of overloaded ‘myprint(NULL)’isambiguous myprint(NULL);//compile error^null.cpp:4:6: note: candidate:voidmyprint(char*)voidmyprint(char*p) {^null.cpp:8:6: not...
[3]https://www.quora.com/Whats-the-difference-between-NULL-and-nullptr-in-C++
root@ubuntu:~/c++# g++ -std=c++11null.cpp -onullnull.cpp: In function ‘intmain()’:null.cpp:14:17: error: call of overloaded ‘myprint(NULL)’isambiguous myprint(NULL);//compile error^null.cpp:4:6: note: candidate:voidmyprint(char*)voidmyprint(char*p) {^null.cpp:8:6: note:...
NULL - cppreference.com (C++) C++ requires that macro NULL to be defined as an integral constant expression having the value of 0. So unlike in C, NULL cannot be defined as (void *)0 in the C++ standard library. ...
#if defined (_STDDEF_H) || defined (__need_NULL) #undef NULL/* in case <stdio.h> has...
$ g+-onullnull.cppnull.cpp:Infunction'int main()':null.cpp:5:17:error:invalid conversionfrom'void*'to'int*'[-fpermissive]int*a=(void*)p; 所以不能将NULL定义为(void*)0。 nullptr nullptr并非整型类别,甚至也不是指针类型,但是能转换成任意指针类型。nullptr的实际类型是std:nullptr_t。
这实际上是VS code编辑器中C++标准设置的问题,你会发现你能够正常运行代码,只是这些鲜红的警告让你很头疼。如下图是报错的地方。 你需要做的是打开偏好设置中的设置选项: 然后在搜索框中键入cpp standard,将cpp... 查看原文 CUDA编程学习之路——_syncthreads警告错误...
https://github.com/llvm-mirror/clang/blob/master/lib/AST/ItaniumMangle.cpp#L2564 caseBuiltinType...
// mcpp_nullptr.cpp // compile with: /clr value class V {}; ref class G {}; void f(System::Object ^) {} int main() { // Native pointer. int *pN = nullptr; // Managed handle. G ^pG = nullptr; V ^pV1 = nullptr; // Managed interior pointer. interior_ptr<V> pV2 = nu...