我需要在单独的文件中提供CFG类,但我不确定如何将它与相关的.h
和主程序一起编译。
我已#include
编辑.h文件,我已在命令行询问了这两个文件,但我不确定为什么将它们编译在一起是错误的。
思想?
CFG.cpp:
#include <iostream>
#include <stdio.h>
#include <string>
using namespace std;
class CFG
{
public:
string code[25];
char startNT;
//private:
CFG(string inCode[], int stringLen)
{
for (int a = 0; a < stringLen; a++)
{
//cout << inCode[a] << endl;
this->code[a] = inCode[a];
}
for (int a = 0; a < stringLen; a++)
{
cout << this->code[a] << endl;
}
}
char getStartNT()
{
return startNT;
}
void setStartNT(char stNT)
{
startNT = stNT;
}
bool processData(string inString, string wkString)
{
//Our recursive function
return true;
}
void garbage()
{
return;
}
};
CFG.h:
#ifndef _cfg_h_
#define _cfg_h_
#include <iostream>
#include <stdio.h>
#include <string>
using namespace std;
class CFG
{
public:
string code[25];
char startNT;
CFG(string inCode[], int stringLen);
char getStartNT();
void setStartNT(char stNT);
bool ProcessData(string inString, string wkString);
void garbage();
};
#endif
cfg_entry.cpp:
#include <stdio.h>
#include <iostream>
#include "cfg.h"
using namespace std;
int main()
{
string inArray[5];
inArray[0] = "test0";
inArray[1] = "test1";
inArray[2] = "test2";
inArray[3] = "test3";
inArray[4] = "test4";
CFG * cfg1 = new CFG(inArray, 5);
cfg1->garbage();
return 0;
}
编译错误:
art@tv:~/Dropbox/Weber/CS 4110/Individual Assignment 2$ g++ -g -std=c++11 -Wall -o cfg_entry cfg.cpp cfg_entry.cpp
/tmp/ccICQEd0.o: In function `main':
/home/art/Dropbox/Weber/CS 4110/Individual Assignment 2/cfg_entry.cpp:15: undefined reference to `CFG::CFG(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, int)'
/home/art/Dropbox/Weber/CS 4110/Individual Assignment 2/cfg_entry.cpp:16: undefined reference to `CFG::garbage()'
collect2: error: ld returned 1 exit status
答案 0 :(得分:0)
我发现了我的问题。在我的例子中,头文件定义了类,并且.cpp文件再次重新定义它,尝试创建2个CFG类实例。 .hpp只处理函数定义时,.h需要处理类声明和变量实例化。
cfg.h:
var $circle = $('.circle');
function moveCircle(e) {
TweenLite.to($circle, 0.7, {
css: {
left: e.pageX,
top: e.pageY
}
});
}
$(window).on('mousemove', moveCircle);
cfg.cpp:
#ifndef _cfg_h_
#define _cfg_h_
#include <iostream>
#include <stdio.h>
#include <string>
using namespace std;
class CFG
{
private:
string code[25];
char startNT;
public:
CFG(string inCode[], int stringLen);
char getStartNT();
void setStartNT(char stNT);
bool processData(string inString, string wkString);
void garbage();
};
#endif