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C++ C++;不承认.h声明_C++_Header Files - Fatal编程技术网

C++ C++;不承认.h声明

C++ C++;不承认.h声明,c++,header-files,C++,Header Files,我在bioter.h(public)中声明了以下函数: 然后,它们在.cc中的实现(为了简短起见,我删除了一堆代码): 但在编译之后,我得到了以下错误: creature.cc:25: error: no 'void Creature::_hop()' member function declared in class 'Creature' creature.cc:54: error: no 'void Creature::_turn(size_t)' member function decla

我在bioter.h(public)中声明了以下函数:

然后,它们在.cc中的实现(为了简短起见,我删除了一堆代码):

但在编译之后,我得到了以下错误:

creature.cc:25: error: no 'void Creature::_hop()' member function declared in class 'Creature'
creature.cc:54: error: no 'void Creature::_turn(size_t)' member function declared in class 'Creature'
creature.cc:88: error: no 'geometry::Point Creature::_facing()' member function declared in class 'Creature'
creature.cc:105: error: no 'void Creature::_infect()' member function declared in class 'Creature'
creature.cc:114: error: no 'bool Creature::_isEmpty()' member function declared in class 'Creature'
creature.cc:121: error: no 'bool Creature::_wall()' member function declared in class 'Creature'
creature.cc:127: error: no 'bool Creature::_same()' member function declared in class 'Creature'
很多其他的函数都读得很好,但是这些函数没有得到任何的喜爱

编辑:

我不确定是否有反对票,可能是因为你们认为我既没有a)将其包括在生物类中,也没有b)包括“生物.h”。我两个都做了,只是没有在问题中包括这一点,因为我认为这是显而易见的

编辑2:你想要.cc和.h?哦,亲爱的上帝

H:

 #ifndef CREATURE
 #define CREATURE
 class Creature {
  public:
   // Constructor (note there is no need for a destructor.)
   Creature();
   Creature(Species *species,World *world,Point pt,Direction d);    

   // takeOneTurn executes lines of this creature's species program,
   // beginning on programLine and continuing until a HOP, LEFT, RIGHT, or 
   // INFECT is executed.
   void takeOneTurn();

   // getters and setters do the obvious things.
   Species *getSpecies();
   Direction getDirection();
   // use this to initialize and infect.  It also sets programLine to 1. 
   void setSpecies(Species * s); 
   void _hop();
   void _turn(size_t way);
   void _infect();
   Point _facing();
   bool _isEmpty();
   bool _wall();
   bool _same();

  private:
   Species *species;   // pointer to this creature's species
   World *world;       // a pointer to the world in which this 
                       // creature is located.
   Point loc;          // where in the world this creature is located
   Direction dir;      // current direction this creature is facing
   size_t programLine; // current program line  
 };

 #endif
bioter.CC

 #include "creature.h"
 #include <cstdlib>

 Creature::Creature(Species *s, World *w,Point pt,Direction d){
   world = w;
   species = s;
   loc = pt;
   dir = d;
   programLine = 0;
 }


 Species* Creature::getSpecies(){
   return species;
 }

 Direction Creature::getDirection(){
   return dir;
 }

 void Creature::setSpecies(Species* s){
   species = s;
 }

 void Creature::_hop(){
   switch(dir){
   case NORTH:
     if(!world->getContents(Point(loc.col,loc.row+1))){
       world->setContents(loc, NULL);
       world->setContents(Point(loc.col,loc.row+1), this);
     }
     break;
   case SOUTH:
     if(!world->getContents(Point(loc.col,loc.row-1))){
       world->setContents(loc, NULL);
       world->setContents(Point(loc.col,loc.row-1), this);
     }
     break;
   case EAST:
     if(!world->getContents(Point(loc.col+1,loc.row))){
       world->setContents(loc, NULL);
       world->setContents(Point(loc.col+1,loc.row), this);
     }
     break;
   case WEST:
     if(!world->getContents(Point(loc.col-1,loc.row))){
       world->setContents(loc, NULL);
       world->setContents(Point(loc.col-1,loc.row), this);
     }
     break;
   }
 }

 void Creature::_turn(size_t way){
   if(way == 0){
     switch(dir){
     case NORTH:
       dir = WEST;
       return;
     case WEST:
       dir = SOUTH;
       return;
     case SOUTH:
       dir = EAST;
       return;
     case EAST:
       dir = NORTH;
       return;
     }
   } else {
     switch(dir){
     case NORTH:
       dir = EAST;
       return;
     case WEST:
       dir = NORTH;
       return;
     case SOUTH:
       dir = WEST;
       return;
     case EAST:
       dir = SOUTH;
       return;
     }
   }
 }

 Point Creature::_facing(){
   switch(dir){
   case NORTH:
     return Point(loc.col,loc.row+1);
     break;
   case WEST:
     return Point(loc.col-1,loc.row);
     break;
   case SOUTH:
     return Point(loc.col,loc.row-1);
     break;
   case EAST:
     return Point(loc.col+1,loc.row);
     break;
   }
 }

 void Creature::_infect(){
   Point facing = _facing();
   if(!world->inRange(facing))return;
   Creature* enemy = world->getContents(facing);
   if(!enemy) return;
   enemy->setSpecies(species);
   world->setContents(facing, enemy);
 }

 bool Creature::_isEmpty(){
   Point facing = _facing();
   if(!world->inRange(facing))return false;
   if(!world->getContents(facing)) return true;
   return false;
 }

 bool Creature::_wall(){
   Point facing = _facing();
   if(!world->inRange(facing))return true;
   return false;
 }

 bool Creature::_same(){
   Point facing = _facing();
   if(!world->inRange(facing))return true;
   if(!world->getContents(facing)) return false;
   Creature* enemy = world->getContents(facing);
   return (enemy->species == species);
 }

 bool _random(){
   int k =  random();
   return (k%2);
 }

 void Creature::takeOneTurn(){
   Instruction whatToDo = species->programStep(programLine);
   switch(whatToDo.op){
   case HOP:
     _hop();
     programLine++;
     break;
   case LEFT:
     _turn(0);
     programLine++;
     break;
   case RIGHT:
     _turn(1);
     programLine++;
     break;
   case INFECT:
     _infect();
     programLine++;
     break;
   case IFEMPTY:
     if(_isEmpty()){
       programLine = whatToDo.line;
       takeOneTurn();
     }
     break;
   case IFWALL:
     if(_wall()){
       programLine = whatToDo.line;
       takeOneTurn();
     }
     break;
   case IFSAME:
     if(_same()){
       programLine = whatToDo.line;
       takeOneTurn();
     }
     break;
   case GO:
     programLine = whatToDo.line;
     takeOneTurn();
     break;
   case IFRANDOM:
     if(_random()) programLine = whatToDo.line;
     else programLine++;
     takeOneTurn();
     break;
   }
 }
#包括“bioter.h”
#包括
生物:生物(物种*s,世界*w,点pt,方向d){
世界=w;
物种=s;
loc=pt;
dir=d;
程序线=0;
}
物种*生物::获取物种(){
返回物种;
}
方向:getDirection(){
返回目录;
}
虚空生物::集合物种(物种*s){
物种=s;
}
虚空生物::_hop(){
交换机(dir){
案例北:
如果(!world->getContents(点(位置列,位置行+1))){
世界->设置内容(loc,NULL);
世界->设置内容(点(位置列,位置行+1),此);
}
打破
南方案例:
如果(!world->getContents(点(位置列,位置行-1))){
世界->设置内容(loc,NULL);
世界->设置内容(点(位置列,位置行-1),本);
}
打破
案例东:
如果(!world->getContents(点(位置列+1,位置行))){
世界->设置内容(loc,NULL);
世界->设置内容(点(位置列+1,位置行),此);
}
打破
凯西:
如果(!world->getContents(点(位置列-1,位置行))){
世界->设置内容(loc,NULL);
世界->设置内容(点(位置列1,位置行),本);
}
打破
}
}
虚空生物::_回合(大小\u方向){
如果(方式==0){
交换机(dir){
案例北:
dir=西部;
返回;
凯西:
dir=南部;
返回;
南方案例:
dir=东;
返回;
案例东:
dir=北;
返回;
}
}否则{
交换机(dir){
案例北:
dir=东;
返回;
凯西:
dir=北;
返回;
南方案例:
dir=西部;
返回;
案例东:
dir=南部;
返回;
}
}
}
点生物::_面(){
交换机(dir){
案例北:
返回点(位置列、位置行+1);
打破
凯西:
返回点(位置col-1,位置row);
打破
南方案例:
返回点(位置列,位置行-1);
打破
案例东:
返回点(位置列+1,位置行);
打破
}
}
无效生物::_infect(){
点面=_面();
如果(!world->inRange(facing))返回;
生物*敌人=世界->获取内容(面对);
如果(!敌人)回来;
敌人->固定物种(物种);
世界->设置内容(面对敌人);
}
布尔生物::_isEmpty(){
点面=_面();
如果(!world->inRange(facing))返回false;
如果(!world->getContents(facing))返回true;
返回false;
}
布尔生物::_wall(){
点面=_面();
如果(!world->inRange(facing))返回true;
返回false;
}
布尔生物::_same(){
点面=_面();
如果(!world->inRange(facing))返回true;
如果(!world->getContents(facing))返回false;
生物*敌人=世界->获取内容(面对);
返回(敌人->物种==物种);
}
bool_random(){
int k=random();
收益率(k%2);
}
空生物::takeneturn(){
指令whatToDo=种类->程序步骤(程序行);
开关(whatToDo.op){
案例跳跃:
_hop();
程序线++;
打破
案例左:
_转弯(0);
程序线++;
打破
案例权利:
_转弯(1);
程序线++;
打破
病例感染:
_感染();
程序线++;
打破
案例IFEMPTY:
如果(_isEmpty()){
programLine=whatToDo.line;
takeneturn();
}
打破
案例IFWALL:
如果(_wall()){
programLine=whatToDo.line;
takeneturn();
}
打破
情况同上:
如果(_same()){
programLine=whatToDo.line;
takeneturn();
}
打破
案例GO:
programLine=whatToDo.line;
takeneturn();
打破
个案编号:
如果(_random())programLine=whatToDo.line;
else-programLine++;
takeneturn();
打破
}
}

你的头文件说这些函数是独立的,但你的源文件说它们属于“生物”类。至少,您需要:

  • 用结构或类包围您的声明

    结构生物 { …您的函数声明。。。 };

  • 从您的cpp文件中删除生物::

最后,在函数名开头加上未加分数是不好的做法。不要这样做。

你的头文件说这些函数是独立的,但你的源文件说它们属于“生物”类。至少,您需要:

  • 用结构或类包围您的声明

    结构生物 { …您的函数声明。。。 };

  • 从您的cpp文件中删除生物::

最后,在函数名开头加上未加分数是不好的做法。不要这样做。

看起来您正在尝试编写一个类。您必须将函数声明放在类声明中,然后将头包含在源文件中

生物

class Creature {
private: // assuming these are private functions
    void _hop();
    void _turn(size_t way);
    void _infect();
    Point _facing();
    bool _isEmpty();
    bool _wall();
    bool _same();

}; // don't forget the ;
bioter.cc

#include "Creature.h"

... your original Creature.cc  contents ...

如果您不是在编写一个类,而是在编写一系列自由函数,请从
bioture.cc

中的函数名中删除
bioture::
。您必须将函数声明放在类声明中,然后将头包含在源文件中

生物

class Creature {
private: // assuming these are private functions
    void _hop();
    void _turn(size_t way);
    void _infect();
    Point _facing();
    bool _isEmpty();
    bool _wall();
    bool _same();

}; // don't forget the ;
bioter.cc

#include "Creature.h"

... your original Creature.cc  contents ...
如果你不是在写一个类而是一个系列
pax$ cat creature.h
class Creature {
    public:
        void _hop();
};

pax$ cat creature.cc
#include <iostream>
#include "creature.h"

void Creature::_hop() {
    std::cout << "Hop\n";
}

int main (void) {
    Creature c;
    c._hop();
    return 0;
}

pax$ rm creature ; g++ -o creature creature.cc ; ./creature
Hop
In file included from creature.cc:1:
creature.h:5: error: expected `)' before '*' token
creature.h:13: error: ISO C++ forbids declaration of 'Species' with no type
creature.h:13: error: expected ';' before '*' token
creature.h:14: error: 'Direction' does not name a type
creature.h:16: error: 'Species' has not been declared
creature.h:18: error: 'size_t' has not been declared
creature.h:20: error: 'Point' does not name a type
creature.h:26: error: ISO C++ forbids declaration of 'Species' with no type
creature.h:26: error: expected ';' before '*' token
creature.h:27: error: ISO C++ forbids declaration of 'World' with no type
creature.h:27: error: expected ';' before '*' token
creature.h:29: error: 'Point' does not name a type
creature.h:30: error: 'Direction' does not name a type
creature.h:31: error: 'size_t' does not name a type
creature.cc:129: error: 'world' was not declared in this scope
creature.cc:129: error: 'facing' was not declared in this scope
creature.cc:130: error: 'world' was not declared in this scope
creature.cc:130: error: 'facing' was not declared in this scope
creature.cc:131: error: 'world' was not declared in this scope
creature.cc:131: error: 'facing' was not declared in this scope
creature.cc:132: error: 'class Creature' has no member named 'species'
creature.cc:132: error: 'species' was not declared in this scope
#include <cstring>
typedef int Species;
typedef int World;
typedef int Point;
typedef int Direction;
class Creature {
#error The class declaration for Creature is indeed being compiled