C错误: Identifier is undefined

Question

我完全不知道为什么会出现这些错误。我的代码是这样的:

类型.h

typedef struct {
  int* myInt;
} myType;

class.h

#ifndef myClass
#define myClass

#include "type.h"

void makeMyType( myType& t );
void deleteMyType ( myType& t );

#endif

类.C

#include "type.h"

makeMyType( myType& t ) { 
  t.myInt = (int*) malloc (sizeof(int));
  t.myInt = 0;
}
deleteMyType ( myType& t ) {
  free (t);
}

useType.C

#include "type.h"
#include "class.h"

int main {
  myType t;
  makeMyType (t);
  deleteMyType (t);
  return 0;
}

然后编译器给我以下内容:

error: identifier "makeMyType" is undefined
error: identifier "deleteMyType" is undefined

什么可能导致此错误？我该如何修复它？

Answer 1

在class.c中包含class.h而不是type.h，在useType.c中包含只是class.h

类型.h

typedef struct {
  int* myInt;
} myType;

类.h

#ifndef myClass
#define myClass

#include "type.h"

void makeMyType( myType& t );
void deleteMyType ( myType& t );

#endif

类.C

#include "class.h"

makeMyType( myType& t ) { 
  t.myInt = (int*) malloc (sizeof(int));
  t.myInt = 0;
}
deleteMyType ( myType& t ) {
  free (t);
}

useType.C

#include "class.h"

int main {
  myType t;
  makeMyType (t);
  deleteMyType (t);
  return 0;
}