之前的预期模板名称？<？ token.Template类继承和虚方法 [英] Expected template-name before ?<? token.Template class inheritance and virtual method

问题描述

大家好，

我在Windows-MS VS2005上编译的C ++源代码没有任何问题。我试图在Linux gcc版本4.1.2（Ubuntu 4.1.2-0ubuntu4）中编译它，我遇到了以下编译器错误：


错误：之前的模板名称是什么？ < ;?令牌

错误：预期`{''之前？<？令牌

错误：预期的不合格身份？之前？<？令牌


（错误指向包含类myMarchingSurface3D的行：派生类中的公共CMarchingSurface3D< U>）


我查看了其他线程，似乎模板类的继承给出了一些可移植性问题。我在这里附上代码：

展开 | 选择 | Wrap | 行号

解决方案

class myMarchingSurface3D：public CMarchingSurface3D< U> {

public：


[... othe rmethods]

您需要将此类声明为模板以支持从CMarchingSurface3D< U>继承。否则，编译器认为U是真实类型：

展开 | 选择 | Wrap | 行号

您需要将此类声明为模板以支持从CMarchingSurface3D< U>继承。否则，编译器认为U是真实类型：

展开 | 选择 | Wrap | 行号

否。我使用Visual Studio.NET 2005进行编译。我对gcc知之甚少。我假设你正在编译g ++以获得C ++编译器？

Hi all,
I have C++ source code that compiles on windows-MS VS2005 without any problem. I am trying to compile it in Linux gcc version 4.1.2 (Ubuntu 4.1.2-0ubuntu4) and I ran into the following compiler error:

error: expected template-name before ?<? token
error: expected `{'' before ?<? token
error: expected unqualified-id before ?<? token

(the error points to the line containing class myMarchingSurface3D:public CMarchingSurface3D<U> in the derived class)

I have looked in other threads and it seems inheritance with template classes gives some portability problems. I attach the code here:

Expand|Select|Wrap|Line Numbers

解决方案

class myMarchingSurface3D:public CMarchingSurface3D<U>{
public:

[...othe rmethods]

You need to declare this class as a template to support inheriting from CMarchingSurface3D<U>. Otherwise, the compiler thinks U is a real type:

Expand|Select|Wrap|Line Numbers

You need to declare this class as a template to support inheriting from CMarchingSurface3D<U>. Otherwise, the compiler thinks U is a real type:

Expand|Select|Wrap|Line Numbers

No. I got it to compile using Visual Studio.NET 2005. I know very little about gcc. I assume you are compiling as g++ to get the C++ compiler?

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