Question

我在这个类构造上有一些错误，

cwrapper.h

#include "SimpleCLM.h"

using namespace std;
using namespace cv;

class A{
public:
    A();
    ~A();
    met1();
};

void *A_init();
A_m1(void *p);

cwrapper.c

#include "cwrapper.h"

using namespace std;
using namespace cv;

void *A_init()
{
    A *p = new A;
    return (void *)p;
}

A_m1(void *p)
{
    return p->met1();
}

A::met1()
{
    return begin();
}

begin是SimpleCLM.h中的一个函数。

以下是make上的错误，

In file included from /home/samuel/Desktop/matlab_cpp/cwrapper.h:1,
                 from /home/samuel/Desktop/matlab_cpp/cwrapper.c:1:
/home/samuel/Desktop/matlab_cpp/SimpleCLM.h:2: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘begin’
In file included from /home/samuel/Desktop/matlab_cpp/cwrapper.c:1:
/home/samuel/Desktop/matlab_cpp/cwrapper.h:3: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘namespace’
/home/samuel/Desktop/matlab_cpp/cwrapper.h:4: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘namespace’
/home/samuel/Desktop/matlab_cpp/cwrapper.h:6: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘A’
/home/samuel/Desktop/matlab_cpp/cwrapper.h:14: warning: data definition has no type or storage class
/home/samuel/Desktop/matlab_cpp/cwrapper.c:3: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘namespace’
/home/samuel/Desktop/matlab_cpp/cwrapper.c:4: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘namespace’
/home/samuel/Desktop/matlab_cpp/cwrapper.c: In function ‘A_init’:
/home/samuel/Desktop/matlab_cpp/cwrapper.c:8: error: ‘A’ undeclared (first use in this function)
/home/samuel/Desktop/matlab_cpp/cwrapper.c:8: error: (Each undeclared identifier is reported only once
/home/samuel/Desktop/matlab_cpp/cwrapper.c:8: error: for each function it appears in.)
/home/samuel/Desktop/matlab_cpp/cwrapper.c:8: error: ‘p’ undeclared (first use in this function)
/home/samuel/Desktop/matlab_cpp/cwrapper.c:8: error: ‘new’ undeclared (first use in this function)
/home/samuel/Desktop/matlab_cpp/cwrapper.c:8: error: expected ‘;’ before ‘A’
/home/samuel/Desktop/matlab_cpp/cwrapper.c: In function ‘A_m1’:
/home/samuel/Desktop/matlab_cpp/cwrapper.c:14: warning: dereferencing ‘void *’ pointer
/home/samuel/Desktop/matlab_cpp/cwrapper.c:14: error: request for member ‘met1’ in something not a structure or union
/home/samuel/Desktop/matlab_cpp/cwrapper.c: At top level:
/home/samuel/Desktop/matlab_cpp/cwrapper.c:17: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘:’ token
make[2]: *** [CMakeFiles/cwrapper.dir/cwrapper.c.o] Error 1
make[1]: *** [CMakeFiles/cwrapper.dir/all] Error 2
make: *** [all] Error 2

Answer 1

用C创建一个类是不可能的;你必须以某种方式告诉编译器你想要编译C ++。

在C中创建类时出错

1 个答案: