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MinGW - GNU c++
main.cpp
~~~~~~~~
template <typedef T>
class List{
private:
size_t id;
T data;

public:
T& getData(){ return T;}
int getId(){return id;}
void setData(T const & d){data = d;}
void setId(const int i){ id = i;}
}
int main(){
return 0;
}
I am learing how to use c++ templates, but this simple example gives me the following error:
....\Templates\main.cpp:1:19: error: 'T' does not name a type
....\Templates\main.cpp:12:1: error: ISO C++ forbids declaration of 'parameter' with no type [-fpermissive]
....\Templates\main.cpp:12:1: error: typedef declaration invalid in parameter declaration
....\Templates\main.cpp:13:1: error: expected '>' before 'int'
....\Templates\main.cpp:13:11: error: expected unqualified-id before '{' token
Process terminated with status 1 (0 minutes, 0 seconds)
5 errors, 0 warnings

AFAIK g++ supports templates, so there must be something wrong with the code, any body?

Op 09-Sep-12 23:30, ArbolOne schreef:
> MinGW - GNU c++
> main.cpp
> ~~~~~~~~
> template <typedef T>
^^^^^^^

Use typename or class here.

ArbolOne wrote:

> MinGW - GNU c++
> main.cpp
> ~~~~~~~~
> template <typedef T>

What is "typedef" doing there? Did you mean "class" or "typename"?

> class List{
> private:
> size_t id;
> T data;
>
> public:
> T& getData(){ return T;}
> int getId(){return id;}
> void setData(T const & d){data = d;}
> void setId(const int i){ id = i;}
> }

Missing ';'.

> int main(){
> return 0;
> }
> I am learing how to use c++ templates, but this simple example gives me the following error:
> ...\Templates\main.cpp:1:19: error: 'T' does not name a type
> ...\Templates\main.cpp:12:1: error: ISO C++ forbids declaration of 'parameter' with no type [-fpermissive]
> ...\Templates\main.cpp:12:1: error: typedef declaration invalid in parameter declaration

Yes, g++ agrees with me.

> ...\Templates\main.cpp:13:1: error: expected '>' before 'int'
> ...\Templates\main.cpp:13:11: error: expected unqualified-id before '{' token
> Process terminated with status 1 (0 minutes, 0 seconds)
> 5 errors, 0 warnings

On 09/09/2012 23:35, Marc wrote:
> ArbolOne wrote:
>> template <typedef T>
>
> What is "typedef" doing there? Did you mean "class" or "typename"?
>
>> class List{
>> T& getData(){ return T;}

...and the above line is wrong as well: it's probably
T& getData(){ return data;}

>> }
>
> Missing ';'.

Thanks folks, I got it now.


On Sunday, September 9, 2012 5:30:01 PM UTC-4, ArbolOne wrote:
> MinGW - GNU c++
>
> main.cpp
>
> ~~~~~~~~
>
> template <typedef T>
>
> class List{
>
> private:
>
> size_t id;
>
> T data;
>
>
>
> public:
>
> T& getData(){ return T;}
>
> int getId(){return id;}
>
> void setData(T const & d){data = d;}
>
> void setId(const int i){ id = i;}
>
> }
>
> int main(){
>
> return 0;
>
> }
>
> I am learing how to use c++ templates, but this simple example gives me the following error:
>
> ...\Templates\main.cpp:1:19: error: 'T' does not name a type
>
> ...\Templates\main.cpp:12:1: error: ISO C++ forbids declaration of 'parameter' with no type [-fpermissive]
>
> ...\Templates\main.cpp:12:1: error: typedef declaration invalid in parameter declaration
>
> ...\Templates\main.cpp:13:1: error: expected '>' before 'int'
>
> ...\Templates\main.cpp:13:11: error: expected unqualified-id before '{' token
>
> Process terminated with status 1 (0 minutes, 0 seconds)
>
> 5 errors, 0 warnings
>
>
>
> AFAIK g++ supports templates, so there must be something wrong with the code, any body?