我真的很擅长将.cpp分成.cpp和.h.
我之前使用过.h文件,但从未真正将.cpp分成.cpp和.h.
我知道.h文件仅用于声明而.cpp用于定义,我试图将.cpp拆分为.cpp和.h但我收到很多错误,所以我想知道是否有人可以帮助我我的代码.
以下类是尚未拆分为.cpp和.h的类,只是为了向您展示“之前的版本”.
TicketOrder.cpp
#include <iostream>
using namespace std;
class TicketOrder
{
private :
char type;
int quantity;
public :
friend std::ostream& operator<<(std::ostream& os, TicketOrder const& order)
{
os << " Type: " << order.type << ", Quantity: " << order.quantity;
return os;
}
//Getters
int getQuantity() const;
{
return quantity;
}
char getType() const;
{
return type;
}
//Setters
void setQuantity (int x)
{
quantity =x;
}
void setType(char y)
{
type =y;
}
};
现在,我将上面的类拆分为.cpp和.h
TicketOrder.cpp
#include <iostream>
#include "TicketOrder.h"
using namespace std;
class TicketOrder
{
//Getters
int getQuantity() const
{
return quantity;
}
char getType() const
{
return type;
}
//Setters
void setQuantity (int x)
{
quantity =x;
}
void setType(char y)
{
type =y;
}
};
TicketOrder.h
#include <iostream>
using namespace std;
class TicketOrder
{
private :
char type;
int quantity;
public :
friend std::ostream& operator<<(std::ostream& os, TicketOrder const& order)
{
os << " Type: " << order.type << ", Quantity: " << order.quantity;
return os;
}
//Getters
int getQuantity() const;
char getType() const;
//Setters
void setQuantity (int x);
void setType(char y);
};
我还有一个用于包含我不会在这里包含的主类的类,因为它很长并且我认为它不重要因为我知道我正在做.h和.cpp错误.
当我尝试编译main时,它给了我这个错误:
Undefined first referenced
symbol in file
TicketOrder::getQuantity() const /var/tmp//ccaSflFG.o
TicketOrder::setType(char) /var/tmp//ccaSflFG.o
TicketOrder::setQuantity(int) /var/tmp//ccaSflFG.o
ld: fatal: Symbol referencing errors. No output written to a.out
collect2: ld returned 1 exit status
任何人都可以帮我拆分.h和.cpp吗?或者给我一些建议?我做了很多研究,无法弄清楚出了什么问题.
谢谢. 解决方法: 您的.cpp文件错误,因为重新声明了类,所以这是错误的.它应该是这样的:
#include <iostream>
#include "TicketOrder.h"
using namespace std;
//Getters
int TicketOrder::getQuantity() const
{
return quantity;
}
char TicketOrder::getType() const
{
return type;
}
//and so on
另外,请注意,在头文件中添加using命名空间,正如您所做的那样,被视为非常糟糕的样式. 来源:https://www./content-4-367751.html
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