编译这些文件时,我一直在重新定义错误。我已经在SO上查询了相同的问题,但我无法找到我错的地方 以下是文件: -
#ifndef UTILITY_H
#define UTILITY_H
//------------//
//HEADER FILES//
//------------//
#include <string>
#include <map>
#include <fstream>
//----------------------------//
/* Declaration of the class. */
// ---------------------------//
class Utility
{
public:
static std::ofstream out ;
static std::ofstream music ;
static std::ofstream video ;
static std::ofstream document ;
static std::ofstream mp3 ;
static std::ofstream mp4 ;
static std::ofstream html ;
static std::ofstream deb ;
static std::ofstream cpp ;
static std::ofstream c ;
static std::ofstream py ;
static std::ofstream php ;
static std::ofstream java ;
static std::ofstream _class ;
static std::ofstream so ;
static std::ofstream master ;
static std::string lastPath ;
static std::map<std::string, std::string> records ;
static bool openStream() ; // to open the stream for indexing.
static void index(std::string) ; // to index.
static bool closeStream() ; // to close the streams after indexing.
static void loadTree() ; // to load the Tree at the start of the application.
static void search(std::string, int) ; // to search for the required keyword.
} ;
#endif
这是我的实现中的utility.cpp文件: -
#include "utility.h"
using namespace std ;
/* The functions are in the temp.cpp file fo testing purposes. */
// -------------------------------------------------------//
/* Definition of the static variables outside the class. */
// ------------------------------------------------------//
ofstream Utility::out ;
ofstream Utility::music ;
ofstream Utility::video ;
ofstream Utility::document ;
string Utility::lastPath ;
ofstream Utility::mp3 ;
ofstream Utility::mp4 ;
ofstream Utility::html ;
ofstream Utility::deb ;
ofstream Utility::cpp ;
ofstream Utility::c ;
ofstream Utility::py ;
ofstream Utility::php ;
ofstream Utility::java ;
ofstream Utility::_class ; // because class is a keyword in c++.
ofstream Utility::so ;
ofstream Utility::master ;
我得到的错误是: -
对于Utility类中的每个静态变量,utility.cpp:18:19:错误:重新定义'std :: ofstream Utility :: c' utility.h:72:10:错误:'std :: ofstream Utility :: c'先前在这里声明
等等。
有谁能告诉我这里做错了什么?
答案 0 :(得分:1)
上面发布的标题缺少一个endif。这肯定会导致你的错误。 这是转录错误吗?
答案 1 :(得分:1)
在源文件中定义所有变量时使用显式命名空间:
std::ofstream Utility::out;