单个继承C ++和头文件 [英] Single Inheritance C++ and header files
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问题描述
我获得了一个
预期的类名'{'token
$ c $
saltwaterfish.h头文件
:
#ifndef SALTWATERFISH_H
#define SALTWATERFISH_H
class saltwaterfish:public fish
{
public:
saltwaterfish();
float GetUnitPrice();
float GetWeight();
};
#endif // SALTWATERFISH_H
这是正确的定义方式头文件
saltwaterfish是鱼的子类?
cpp is
#includefish.h
#includesaltwaterfish.h
fish.cpp类别:
#includefish.h
#include< iostream>
#includefreshwaterfish.h
#includesaltwaterfish.h
using namespace std;
fish :: fish()
{
};
float fish :: CalculatePrice()
{
return GetUnitPrice()* GetWeight();
}
float fish :: GetUnitPrice()
{
return 1.0;
}
float fish :: GetWeight()
{
return 1.0;
}
解决方案包括 fish.h
saltwaterfish.h中的头文件
// saltwaterfish.h
#includefish.h
#ifndef SALTWATERFISH_H
#define SALTWATERFISH_H
class saltwaterfish:公共鱼
{
public:
saltwaterfish();
float GetUnitPrice();
float GetWeight();
};
#endif // SALTWATERFISH_H
编译器没有看到Fish是一个类,因此错误。
I'm getting an
expected class-name before '{' token
in the following code
the saltwaterfish.h header file:
#ifndef SALTWATERFISH_H
#define SALTWATERFISH_H
class saltwaterfish: public fish
{
public:
saltwaterfish();
float GetUnitPrice();
float GetWeight();
};
#endif // SALTWATERFISH_H
Is this the correct way to define the header file for
"saltwaterfish is a subclass of fish" ?
the only thing I have in saltwaterfish.cpp is
#include "fish.h"
#include "saltwaterfish.h"
the fish.cpp class:
#include "fish.h"
#include <iostream>
#include "freshwaterfish.h"
#include "saltwaterfish.h"
using namespace std;
fish::fish()
{
};
float fish::CalculatePrice()
{
return GetUnitPrice()*GetWeight();
}
float fish::GetUnitPrice()
{
return 1.0;
}
float fish::GetWeight()
{
return 1.0;
}
解决方案 Include the fish.h
header file in saltwaterfish.h
//saltwaterfish.h
#include"fish.h"
#ifndef SALTWATERFISH_H
#define SALTWATERFISH_H
class saltwaterfish: public fish
{
public:
saltwaterfish();
float GetUnitPrice();
float GetWeight();
};
#endif // SALTWATERFISH_H
The compiler does not see that Fish is a class, hence the error.
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