@@error C2679问题。。。 [问题点数:30分,结帖人bladeinside]

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错误 1 error C2679: 二进制"=": 没有找到接受"LPCTSTR"类型的右操作数的运算
有可能工程是UNICODE的,换成多字节字符的应该就可以了,要是还想用UNICODE就得走一下字符串的转换了
C++语言错误 C2679 二进制“>>”: 没有找到接受“overloaded-function”类型的右操作数的运算符(或没有可接受的转换)
C++语法错误nC2679 二进制“>>”: 没有找到接受“overloaded-function”类型的右操作数的运算符(或没有可接受的转换) n上网找了好久都没有找到答案,所以n我想请教一下是怎么回事,谢谢各位nvisual studio2017n//头文件n#includen#includenusing namespace std;nclass studentn{nprivate...
C2679 二进制“>>”: 没有找到接受“std::string”类型的右操作数的运算符(或没有可接受的转换)
在VS上打代码,结果出现了上面这个错误nn很奇怪,以前在其他IDE上这么写都没有<em>问题</em>,不知道为什么在VS写就出现了这个错误,我一开始以为是我的代码的<em>问题</em>。可是怎么想都没有想通。 n甚至,我自己在main函数中又写了一遍之后,还是报一样的错误。nn#include &amp;lt;iostream&amp;gt;nusing namespace std;nint main(){n string s;n ...
error C2679问题 请教
错误信息:rn--------------------Configuration: 4_4 - Win32 Debug--------------------rnCompiling...rn4_4.cpprnF:\C++\Test\4_4\4_4.cpp(56) : <em>error</em> C2679: binary '<<<<>' : no operator defined which takes a right-hand operand of type 'class UserProfile' (or there is no acceptable conversion)rnF:\C++\Test\4_4\4_4.cpp(71) : <em>error</em> C2679: binary '<<< UserProfile::_level_map;rnrnvoid UserProfile::init_level_map()rnrn _level_map["Beginner"]=Beginner;rn _level_map["Intermediate"]=Intermediate;rn _level_map["Advanced"]=Advanced;rn _level_map["Guru"]=Guru;rnrnrninline void UserProfile::reset_level(const string &level)rnrn map::iterator it;rn rn if(_level_map.empty())rn init_level_map();rn //确保level的确代表一个可识别的用户等级 rn _user_level=rn ((it=_level_map.find(level))!=_level_map.end()) ? it->second : Beginner;rnrnrnistream& operator>>(istream &is,UserProfile &rhs)rnrn string login,level;rn is>>login>>level;rnrn int lcount,gcount,gcorrect;rn is>>lcount>>gcount>>gcorrect;rn rhs.reset_login(login);rn rhs.reset_level(level);rnrn rhs.reset_login_count(lcount);rn rhs.reset_guess_count(gcount);rn rhs.reset_guess_correct(gcorrect);rnrn return is;rnrnrnmain文件:rn#include "UserProvide.h"rn#include rn#include rnusing namespace std;rnrninline double UserProfile::guess_average() constrnrn return _guesses ? double(_correct_guesses)/double(_guesses)*100 : 0.0;rnrnrninline UserProfile::UserProfile(string login,uLevel level)rn:_login(login),_user_level(level),rn_times_logged(1),_guesses(0),_correct_guesses(0)rnrnrnrnrninline UserProfile::UserProfile()rn:_login("guess"),_user_level(Beginner),rn _times_logged(1),_guesses(0),_correct_guesses(0)rnrn static int id=0;rn char buffer[16];rn //_itoa()rn _itoa(id++,buffer,10);rn //针对guest,加入一个独一无二的活动期识别码rn _login+=buffer;rnrnrninline bool UserProfile::operator == (const UserProfile &rhs)rnrn if(_login==rhs._login && _user_name==rhs._user_name )rn return true;rn return false;rnrnrninline bool UserProfile::operator != (const UserProfile &rhs)rnrn return !(*this==rhs);rnrnrninline string UserProfile::level() constrnrn static string _level_table[]=rn rn "Beginner","Intermediate","Advanced","Guru"rn ;rn return _level_table[_user_level];rnrnrnint main()rnrn string sval;rn rn UserProfile anon;rn cout<>anon;rnrn cout<
error C2679
#include rn#include rnint main()rnrnstring word;rnwhile(cin>>word)rncout<<>” : 没有找到接受“”类型的右操作数的运算符(或没有可接受的转换)
error C2679:
这是我编的一个读取文件的程序中的一段代码:rnrn unsigned char depth;rn for(int j=0;j>depth;rnrn rn BEAMINFO sBeamInf[24];//BEAMINFO为10字节长度的一个结构体,包含5个变量,每个变量长度为2个字节,我要读24个这样的结构体//rn for(int k=0;k>sBeamInf[k];//这里出错rnrn rnrnrn出现错误:rn<em>error</em> C2679: binary '>>' : no operator defined which takes a right-hand operand of type 'struct _BEAMINFO_H' (or there is no acceptable conversion)rnrn各位高手帮忙看看,谢谢了!!!rnrn
编译错误. error 26 error c2679
vector m_pCharArray;//数据类型rn//-------------------rnrnvector ::iterator it;rnit = &m_pCharArray[nPos];//这句出错,npos是整形rn//rnError 26 <em>error</em> C2679: binary '=' : no operator found which takes a right-hand operand of type 'st_Char **__w64 ' (or there is no acceptable conversion) d:\EditCtrlSrc\EditCtrl.cpp 167 rnrnrnrnm_pCharArray.erase(&m_pCharArray[nPos]);//这句出错,npos是整形rnrnError 27 <em>error</em> C2664: 'std::_Vector_iterator std::vector::erase(std::_Vector_iterator)' : cannot convert parameter 1 from 'st_Char **__w64 ' to 'std::_Vector_iterator' d:\EditCtrlSrc\EditCtrl.cpp 193 rnrn我的编译器是VS2005,请问如何修改,是数据类型转换<em>问题</em>吗?rn困惑了,头文件我已经包括 STD 名字空间也声明了.
error c2679错误原因
#includernusing namespace std;rnclass Complexrnrnprivate:rn double real;rn double image;rnpublic:rn Complex() rn rn real=0;rn image=0;rn ;rn void setreal(double a)rn rn real=a;rn ;rn void setimag(double b)rn rn image=b;rn ;rn double getreal() const;rn double getimag() const;rn Complex comadd(const Complex &c);rn Complex conminus(const Complex &c);rn;rndouble Complex::getreal()constrnrn return real;rnrndouble Complex::getimag()constrnrn return image;rnrnComplex Complex::comadd(const Complex &c)rnrn Complex t;rn t.real=c.getreal()+real;rn t.image=c.getimag()+image;rn return t;rnrnComplex Complex::conminus(const Complex &c)rnrn Complex p;rn p.real=p.getreal()-real;rn p.image=c.getimag()-image;rn return p;rnrnint main()rnrn Complex z,x,y,m;rn z.setreal(3);rn z.setimag(2);rn x.setreal(4);rn x.setimag(1);rn[color=#FF0000] cout<
从chrome源码到xilium.CefGlue集成注意事项
一、编译chrome让其支持mp4这个地址里面有必须的编译条件介绍.https://chromium.googlesource.com/chromium/src/+/master/docs/windows_build_instructions.md要点如下:1.设置系统区域为英语(美国)。控制面板-区域-管理-更改系统区域设置-英语(美国)2.当前新版仅支持vs2015 update2编译。3.至...
error C2679 错误求救!
一下是c++ 代码:rn#include rn#include rnusing namespace std;rnstring s;rnrnvoid main()rnrn string s2;rn cin>>s2;rnrnrn但是编译时报了:<em>error</em> C2679: binary '>>' : no operator defined which takes a right-hand operand of type 'class std::basic_string,class std::allocator >' (or there is no acceptarnble conversion)rn网上查了,也不知道原因!郁闷。。。。
关于error C2679: binary
#include rn#include rn#include rnusing namespace std;rnvector::iterator find_val(rn vector::iterator beg,rn vector::iterator end,rn int value,rn vector ::size_type &occurs)rnrn vector::iterator res_iter=end;rn occurs=0;rn for(;beg!=end;++beg)rn if(*beg==value)rn rn if(res_iter==end)rn res_iter=beg;rn ++occurs;rn rn return res_iter;rnrnrnint main()rnrn int input,goal;rn vector::size_type count=0;rn vectorivec;rn while(cin>>input)rn ivec.push_back(input);rn cout<<>goal;rn vector::iterator iter1=ivec.begin();rn vector::iterator iter2=ivec.end();rn vector::iterator it=find_val(iter1,iter2,goal,count);rn cout<
求解error C2679
#include rnusing namespace std;rnrnclass Foo //定义一个Foo类rnrnpublic:rn //friend class Bar;rn Foo(int x)y=x; //接受一个参数的构造函数rn Foo()rn //friend void main();rn int get() //返回私有函数Y的值rn rn return y;rn rnprivate:rn static int y; //静态私有数据成员rn;rnrnint Foo::y(0); //对私有函数进行外部定义rnrnclass Bar //定义一个Bar类rnrnrnpublic:rn //friend class Foo;rn Foo Fooval()rn rn callsFooval++;rn return val;rn rn int getcall()rn rn return callsFooval;rn rnprivate:rn static int callsFooval; //静态数据成员rn static int x; //静态数据成员rn static Foo val; //静态Foo类数据成员rn;rnrnint Bar::x(20);rnFoo Bar::val(15);rnint Bar::callsFooval=0;rnrnvoid main()rnrn Foo ac1=Foo(5);rn Foo *ac2=new Foo(6);rn Bar br1;rn Bar br2;rnrn //int x;rn cout << "ac1:" << ac1.get() << endl;rn cout << "ac2:" << ac2->get() << endl;rn cout << "br1.Fooval:" << br2.Fooval() << endl; //<em>error</em> C2679: 二进制“<<< "br.getcall:" << br1.getcall() << endl;rnrn
error C2679: binary '>>' 这个错误
源程序:rnCommand com;rn //CString filename;rn int answer;rn com.ID=DelFile;rn cout<>com.FilePath;rn //MultiByteToWideChar(CP_ACP,0,filename,-1,com.FilePath,max_PATH);rn //com.FileName=filename.AllocSysString();rn if(send(client,(char*)&com,sizeof(com),0)==SOCKET_ERROR)rn rn cout<<< (or there is no acceptable conversion)rnrn这个要怎么解决?
请教C++ error C2679 错误
在vc6.0(装上stlport后)和linux下没有错误,可是在vs2005下编译,报错!装上stlport还是报错,这是怎么回事呢?rn程序应该没<em>问题</em>才对啊,为什么换了个环境就不好用了呢?!rnrn<em>error</em> C2679: binary '=' : no operator found which takes a right-hand operand of type 'stlp_std::priv::_Rb_tree_iterator' (or there is no acceptable conversion)rn1> withrn1> [rn1> _Value=SctData,rn1> _Traits=stlp_std::priv::_ConstSetTraitsTrn1> ]rn1> d:\stlport-5.1.5\stlport\stl\_tree.h(202): could be 'stlp_std::priv::_Rb_tree_iterator &stlp_std::priv::_Rb_tree_iterator::operator =(const stlp_std::priv::_Rb_tree_iterator &)'rn1> withrn1> [rn1> _Value=SctData,rn1> _Traits=stlp_std::priv::_SetTraitsTrn1> ]rn1> while trying to match the argument list '(stlp_std::priv::_Rb_tree_iterator, stlp_std::priv::_Rb_tree_iterator)'rn1> withrn1> [rn1> _Value=SctData,rn1> _Traits=stlp_std::priv::_SetTraitsTrn1> ]rn1> andrn1> [rn1> _Value=SctData,rn1> _Traits=stlp_std::priv::_ConstSetTraitsTrn1> ]rnrnSctData是一个结构体。rn双击错误,定位的下列的程序:rnset::iterator it = pset.begin();rnrn望高手赐教
error C2679,这是什么错误
if(m_NO ==m_LISTDATA.GetItemText(i,0).TrimRight())rn上面的错在那里?/??rnrn<em>error</em> C2679: binary '==' : no operator defined which takes a right-hand operand of type 'void' (or there is no acceptable conversion)
error C2679: binary '>>' : no operator defined
[code=C/C++]rn#includern#includern#includernusing namespace std;rnrnstruct Readingrnrn int hour;rn double temperature;rn Reading(int h,double t):hour(h),temperature(t)rn;rnrnint main()rnrn cout<>name;[/color]rn ifstream ist(name.c_str());rn [color=#FF0000]if(!ist) cout<<>name;[/color]rn ofstream ost(name.c_str());rn [color=#FF0000]if(!ost) cout<< temps;rn int hour;rn double temperature;rn while(ist>>hour>>temperature)rn rn if(hour' (or there is no acceptable rnconversion)rn红色是错误的代码!rn但用dev-cpp编译可以通过,很迷茫,高手请指教!rn先谢过~~
出现了error C2679,期待解决!
<em>error</em> C2679: binary 'name=nam;rn sex=s;rn ~Student()rnprotected:rn int num;rn string name;rn char sex;rn;rnclass Student1:public Studentrnpublic:rn Student1(int n,string name,char s,int a,string ad):Student(n,name,s)rn age=a;rn this->addr=ad;rn rnvoid show()rn cout<<
求助!!郁闷死了!error c2679
#includern#includern#includern#includernstruct studentrnrn char name[20];rn float height;rn student *next;rn;rnvoid main()rnrn student a[100];rn int i;rn cout<>a[i].name>>a[i].height;rn a[i].next=NULL;rn rn ofstream fout("student.txt");rn if(!fout)rn cout<<>b[i].name>>b[i].height>>b[i].next)rn i++;rn student *head;rn int j;rn head=b;rn for(i=1;iheightheight)rn rn b[i].next=head;rn head=&b[j];rn rn for(j=0;jname<<>temp;rn student s;rn while(fin>>s.name>>s.height>>s.next)rn rn int k;rn k=stricmp(s.name,temp);rn if(k==0)rn rn cout<>' : no operator defined which takes a right-hand operand of type 'struct student *' (or there is no acceptable conversion)rnD:\Cheung\阅读器\temp2\a.cpp(35) : fatal <em>error</em> C1903: unable to recover from previous <em>error</em>(s); stopping compilationrn执行 cl.exe 时出错.rnrna.obj - 1 <em>error</em>(s), 0 warning(s)rn
error C2679,请各位帮忙
代码如下:rn string _name ="Rick"; //empCurrent.GetName();rn rn std::cout << _name << std::endl;rnrnrn如何解决?rnrnrnrnrn
cout有关头文件
#includen#includen#includen#includenusing namespace std;nnvector findWords(vector& words) {n vector res;n unordered_set row1{ 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p' };n unordered_set row2{ '
分享一次调试bug遇到的问题及解决方法
一次调试遇上了这样的bug:n        <em>error</em> C2679: 二进制“=”: 没有找到接受...类型的右操作数的运算符(或没有可接受的转换)
C++primer阅读笔记-模板与泛型编程(重载与模板)
函数模板可以被另一个模板或者一个非模板函数重载,名字相同的函数必须具有不同数量或类型的参数。n设计到函数模板,函数匹配规则满足: n对于一个调用,其候选函数包括所有模板实参推断成功的函数模板实例n候选函数总是可行的,因为模板实参推断会排出任何不可行的模板n可行函数按照类型转换来排序n如果恰有一个函数提供比其他函数都更好的匹配,则选择此函数,如果有多个函数提供同样好的匹配,则:n如果同样好的函数中只有
MySQL的ERROR 150问题
MySQL的ERROR 150<em>问题</em> MySQL的ERROR 150<em>问题</em> MySQL的ERROR 150<em>问题</em>
数据结构课设学生管理系统
  本程序要求设计一个包含学生信息(学号,姓名,成绩)的学生管理系统(可以不考虑重名的情况),以顺序表的结构实现,系统包含的功能如下:   (1) 根据指定学生个数,逐个输入学生信息;   (2) 逐个显示学生表中所有学生的相关信息;   (3) 给定一个学生信息,插入到表中指定的位置;   (4) 删除指定位置的学生记录;   (5) 统计表中学生个数;   (6) 利用直接插入排序或者折半插入排序按照姓名进行排序;   (7) 利用快速排序按照学号进行排序;   (8) 根据姓名进行折半查找,要求使用递归算法实现,成功返回此学生的学号和成绩;   (9) 根据学号进行折半查找,要求使用非递归算法实现,成功返回此学生的姓名和成绩。   要求:设计具有一定的健壮性,美观及界面友好,具有保存功能。
c++中cin函数错误:error C2679
遍译时提示错误:rncpp(21) : <em>error</em> C2679: 二进制“>>”: 没有找到接受“int *”类型的右操作数的运算符(或没有可接受的转换)rn我是新手,望高手指点一哈.非常感谢 rn#include "stdafx.h"rn#include "conio.h"rn#include "string"rn#include "iomanip"rn#include "iostream"rnusing namespace std;rnstruct studentint num;char name[12];float score;;rnstruct student s[10];rnvoid main()rnrn struct student *p,*q[10];rn int i,j,k;rn cout<<>&p->num>>&p->name>>&p->score;[/color]rn q[i]=p++;rn rn for(i=0;iscorescore)k=j;rn if(k!=i)rn rn p=q[i];q[i]=q[k];q[k]=p;rn rn rn cout<<score;rn rnrn
使用vector时候遇到的error C2679
我最近用VC6.0写一个Win32 的OpenGL场景,在使用vector的时候报了一个错误:rn--------------------Configuration: MGS - Win32 Debug--------------------rnCompiling...rnmain.cpprnf:\program files\microsoft visual studio\vc98\include\xutility(39) : <em>error</em> C2679: binary '=' : no operator defined which takes a right-hand operand of type 'const class CDesk' (or there is no acceptable conversion)rn f:\program files\microsoft visual studio\vc98\include\vector(170) : see reference to function template instantiation 'void __cdecl std::fill(class CDesk *,class CDesk *,const class CDesk &)' being compiledrnError executing cl.exe.rnrnMGS.exe - 1 <em>error</em>(s), 0 warning(s)rnrn具体代码我做成了 win32 console精简版 上传了,请高手帮忙解决。rn此题我在金山面试时候问过他们的技术经理,他说我连这个都不会,C++太差了,然后也没有解答。(当然面试也没有让我过。)希望大家给我解答之余,告诉我我问的这个<em>问题</em>是不是很白痴。rn
vc++出现错误error C2679: binary '=' :
E:\Program Files\Microsoft Visual Studio\MyProjects\people\peopleView.cpp(190) : <em>error</em> C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class CString' (or there is no acceptable conversion) rnE:\Program Files\Microsoft Visual Studio\MyProjects\people\peopleView.cpp(195) : <em>error</em> C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class CString' (or there is no acceptable conversion) rnE:\Program Files\Microsoft Visual Studio\MyProjects\people\peopleView.cpp(203) : <em>error</em> C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class CString' (or there is no acceptable conversion) rnE:\Program Files\Microsoft Visual Studio\MyProjects\people\peopleView.cpp(209) : <em>error</em> C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class CString' (or there is no acceptable conversion) rnE:\Program Files\Microsoft Visual Studio\MyProjects\people\peopleView.cpp(211) : <em>error</em> C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class CString' (or there is no acceptable conversion) rnE:\Program Files\Microsoft Visual Studio\MyProjects\people\peopleView.cpp(213) : <em>error</em> C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class CString' (or there is no acceptable conversion) rn以下是我的代码:(后标注第几行) rnm_pSet->AddNew (); rnm_pSet->m_zgbm=dlg.m_zgbm; rnm_pSet->m_xm=dlg.m_xm; rnm_pSet->m_xb=dlg.m_xb; rnm_pSet->m_mz=dlg.m_mz; rnm_pSet->m_csny=dlg.m_csny;//190 rnm_pSet->m_hyzk=dlg.m_hyzk; rnm_pSet->m_whcd=dlg.m_whcd; rnm_pSet->m_jkzk=dlg.m_jkzk; rnm_pSet->m_zzmm=dlg.m_zzmm; rnm_pSet->m_zcbm=dlg.m_zcbm;//195 rnm_pSet->m_jg=dlg.m_jg; rnm_pSet->m_sfzh=dlg.m_sfzh; rnm_pSet->m_byxx=dlg.m_byxx; rnm_pSet->m_zytc=dlg.m_zytc; rnm_pSet->m_hkszd=dlg.m_hkszd; rnm_pSet->m_hkxz=dlg.m_hkxz; rnm_pSet->m_xzz=dlg.m_xzz; rnm_pSet->m_zw=dlg.m_zw;//203 rnm_pSet->m_gzm=dlg.m_gzm; rnm_pSet->m_jspx=dlg.m_jspx; rnm_pSet->m_jlcf=dlg.m_jlcf; rnm_pSet->m_smwt=dlg.m_smwt; rnm_pSet->m_tbrqm=dlg.m_tbrqm; rnm_pSet->m_tbrq=dlg.m_tbrq;//209 rnm_pSet->m_gsyj=dlg.m_gsyj; rnm_pSet->m_scrq=dlg.m_scrq;//211 rnm_pSet->m_ryxz=dlg.m_ryxz; rnm_pSet->m_rcsj=dlg.m_rcsj;//213 rnrn请问这是什么错误?这一段代码是我准备向数据库中添加新条目 rnm_pSet->m_ryzt=dlg.m_ryzt; rnm_pSet->m_bz=dlg.m_bz; rnm_pSet->m_bmbm=dlg.m_bmbm; rnrnm_pSet->Update ();
error C2679 数据结构与算法第三版习题1.15
《数据结构与算法分析 第三版 C++描述》习题1.15rn[b][color=#FF0000]运行时候出现如下<em>问题</em>[/color]:[/b]rnrnrn1>f:\c workspace\111030_chapter1answersheet_dsaa\111030_chapter1answersheet_dsaa\answersheet_dsaa.cpp(158) : <em>error</em> C2679: binary '=' : no operator found which takes a right-hand operand of type 'const Employee' (or there is no acceptable conversion)rn1> d:\software\microsoft visual studio 2008\vc\include\xstring(914): could be 'std::basic_string &std::basic_string::operator =(const std::basic_string &)'rn1> withrn1> [rn1> _Elem=char,rn1> _Traits=std::char_traits,rn1> _Ax=std::allocatorrn1> ]rn1> d:\software\microsoft visual studio 2008\vc\include\xstring(919): or 'std::basic_string &std::basic_string::operator =(const _Elem *)'rn1> withrn1> [rn1> _Elem=char,rn1> _Traits=std::char_traits,rn1> _Ax=std::allocatorrn1> ]rn1> d:\software\microsoft visual studio 2008\vc\include\xstring(924): or 'std::basic_string &std::basic_string::operator =(_Elem)'rn1> withrn1> [rn1> _Elem=char,rn1> _Traits=std::char_traits,rn1> _Ax=std::allocatorrn1> ]rn1> while trying to match the argument list '(std::string, const Employee)'rn1>Build log was saved at "file://f:\C Workspace\111030_Chapter1AnswerSheet_DSAA\111030_Chapter1AnswerSheet_DSAA\Debug\BuildLog.htm"rnrn这应该是一个很简单的<em>问题</em>。本人新手,实在是看不懂!望大侠们指教!rnrnrn[b]自己写的源程序[/b]rnrn#include rn#include rn#include rnusing namespace std;rnrnstring getLast( const string & nm );rnrnclass Employeernrnpublic:rn void setValue( const string & n, double s )rn rn name = n;rn salary = s;rn rnrn const string & getName() constrn rn return name;rn rnrnprivate:rn string name;rn double salary;rn;rnrn/*rnconst Employee & Employee::operator =(const Employee &rhs)rnrn if ( this != &rhs )rn rn name = *rhs.name;rn salary = *rhs.salary;rn rnrn return *this;rnrn*/rnrntemplate rnconst Object & findMax( const vector & arr, Comparator isLessThan )rnrn int maxIndex = 0;rnrn for ( int i = 1; i < arr.size(); i++ )rn if ( isLessionThan( arr[ maxIndex ], arr[ i ] ) )rn maxIndex = i;rnrn return arr[ maxIndex ];rnrnrnclass EmployeeLastNameComparernrnpublic:rn bool operator() ( const Employee & lhs, const Employee & rhs ) constrn rn return getLast( lhs.getName() ) < getLast( rhs.getName() );rn rnrn;rnrnstring getLast( const string & name )rnrn string last;rn int blankPosition = name.find( " " );rnrn last = name.substr( blankPosition + 1, name.size() );rnrn return last;rnrnrnint main()rnrn vector v(3);rn string str = "";rnrn v[0].setValue( "George Bush", 400000.00 );rn v[1].setValue( "Bill Gates", 2000000000000.00 );rn v[2].setValue( "Dr. Phil", 1300000000.00 );rn str = ( findMax( v, EmployeeLastNameCompare() ) );rn cout << str << endl;rnrn return 0;rn
求教:error C2679 产生的原因是什么?
<em>error</em> C2679: 二进制“>>” : 没有找到接受“”类型的右操作数的运算符(或没有可接受的转换)rnrn我在代码中使用cin >> 就出现这样的错误,请问为什么?怎样解决?
系统编译时提示:error C2679,如何解决?
源程序如下:rn ostringstream s;rn s << "0x" << ::setw( 2 ) << setfill( '0' ) << hex << val;rnrn一旦进行编译提示:<em>error</em> C2679: binary '< (or there is no acceptable conversion)rnrnrnrn
关于C++中~error C2679: binary '< 的问题!!求帮忙!感激不尽!
源程序是这样的:rn#include rn#include rnrnusing namespace std;rnrnstruct FishOilrnrn string name;rn string uid;rn char sex;rn; rnrnbool InitFishC();rnbool ReadFishC(); rnvoid RecordFishC();rnbool WriteFishC(FishOil *OilData);rnrnint main()rnrn int i;rn rn InitFishC(); rn while( 1 )rn rn cout << "请选择需要进行的操作: \n";rn cout << "1. 打印数据到屏幕\n";rn cout << "2. 录入数据\n"; rn cout << "3. 退出程序\n"; rn cin >> i;rn rn switch( i )rn rn case 1: rn if( ReadFishC() )rn cout << "成功读取文件^_^\n\n";rn elsern cout << "读取文件失败T_T\n\n";rn break;rn case 2:rn RecordFishC();rn break;rn case 3:rn return 0; rn rn rn rn cout << "初始化失败T_T......\n\n";rn rn return 0;rn rnrnrnbool InitFishC()rnrn FishOil OilInit;rn OilInit.name="小甲鱼";rn OilInit.uid="fishc0000";rn OilInit.uid='F';rn if( WriteFishC(&OilInit)==false )rn rn cout << "初始化失败 ";rn rnrnrn rnrnbool ReadFishC()rnrn string ch;rn ifstream fileinput("FishC.txt",ios::in);rn cout << "名字" << "号码" << "性别" << "\n";rn if( fileinput.is_open() )rn rn fileinput >> ch;rn std::cout << ch <<< "请输入name ";rn cin >> (*pointdata).name ;rn cout << "请输入uid ";rn cin >> (*pointdata).uid ;rn cout << "请输入sex ";rn cin >> (*pointdata).sex ;rn rn cout << "录入成功,是否保存Y/N";rn cin >> save;rn if( save=='Y')rn rn if(WriteFishC( pointdata ))rn cout << "成功写入" ;rn rn elsern cout << "失败写入 ";rn rnrnrn cout << "是否再次录入?";rn cin >> start;rn rnrnrnrnbool WriteFishC( FishOil *pOilData )rnrn ofstream fileOutput("FishC.txt", ios::app); rn if( fileOutput.is_open() ) rn rn fileOutput << pOilData->name <<< pOilData->uid <<< pOilData->sex <<< "数据成功保存 ";rn return 1;rn rn elsern rn cout << "数据保存失败 ";rn return 0;rn rnrn————————————————————————————————————————————————————————————————————————————————————————————————————————————————rn提示 <em>error</em> C2679: binary '>>' : no operator defined which takes a right-hand operand of type 'class std::basic_string,class std::allocator >' (or there is no acceptarnble conversion)rn求大神帮忙!!!!!!!!!!!!!!!!!!感激不尽!
用vc6.0 编译出现 error C2679 问题在哪
#include rnusing namespace std;rnclass Arnrnpublic:rn A()x=new int;*x=5;rn ~A()delete x,x=NULL;rn A(const A &a)rn rn cout<<<
error C2678: 二进制“<”: 没有找到接受“const MyEvent”类型的左操作数的运算符(或没有可接受的转换)
今天写观察者设计模式,需要用到运算符的重载,后面又用不到了...rn报了这个错误,百度一下找到答案。rnMyEvent报错成员函数:rnrnbool  operator rn{rnreturn mEventId rn}rnrnrnrn原来是少const限定符把函数设置为constrnbool  operator rn{rnreturn mEventId rn}
二进制“<<”: 没有找到接受“std::string”类型的右操作数的运算符
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求大家指教啊error C2679: binary '< : no operator defined which 。。。
#include rnusing namespace std;rnstruct Personrn string name;rn bool gender;rn int age;rn Person* lover;rn Person(string n,bool g)rn lover=NULL;rn age=0;rn rn void show()rn rn cout<< (or there is no acceptable conversion)rnError executing cl.exe.rnrn0412amb.exe - 2 <em>error</em>(s), 0 warning(s)rn
error C2679: binary '< : no operator defined which takes a right-hand operand
#include rn#include rnusing namespace std;rnrnclass CMyStringrnrnprivate:rn char *str;rnpublic:rn CMyString(char *s = NULL)rn rn if(s == NULL)rn rn str = new char[20];rn str = '\0';rn rn elsern rn str = new char[strlen(s) + 1];rn strcpy(str, s);rn rn rn ~CMyString()rn rn if(str != NULL)rn rn delete str;rn str = NULL;rn rn rn rnpublic:rn int GetLength() constrn rn return strlen(str);rn rnrn bool IsEmpty() constrn rn if(strlen == 0)rn return true;rn rnrn void Empty()rn rn str = '\0';rn rnrn char GetAt(int nIndex) constrn rn if(nIndex < 0 || nIndex > (strlen(str) - 1))rn rn cout << "下标越界" << endl; rn rn elsern return str[nIndex];rn rnrn char operator[](int nIndex) constrn rn if(nIndex < 0 || nIndex > (strlen(str) - 1))rn rn cout << "下标越界" << endl; rn rn elsern return str[nIndex];rn rnrn void SetAt(int nIndex, char ch)rn rn if(nIndex < 0 || nIndex > (strlen(str) - 1))rn rn cout << "下标越界" << endl; rn rn elsern rn str[nIndex] = ch;rn rn rnrn// operator char*() constrn// rn// return str;rn// rn rn const CMyString& operator=(const CMyString& stringSrc)rn rn delete[] str;rn str = new char[strlen(stringSrc.str) + 1];rn strcpy(str, stringSrc.str);rn return (*this);rn rnrn;rnrnint main()rnrn //char *s = "hello";rn CMyString s1 = "hello";rn CMyString s2 = "world";rn s1 = s2;rn cout << s1 << endl;[color=#FF0000]//<em>问题</em>就在这个地方[/color]rn return 0;rnrn//会报这样的错误<em>error</em> C2679: binary '< (or there is no acceptable conversion) 应该怎么避免了,我用的是VC6.0。
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error C2679 为什么把引用去掉就能运行通过?
#includernrnclass Complexrnrnpublic:rn Complex()real=0;image=0;rn Complex(double r)real=r;image=0;rn Complex(double r,double i)real=r;image=i;rn friend Complex operator+ (Complex &c1,Complex &c2);rn void display();rnprivate:rn double real;rn double image;rn ;rnComplex operator+(Complex &c1,Complex &c2)rnrn return Complex(c1.real+c2.real,c1.image+c2.image);rnrnvoid Complex:: display()rnrn cout<<
使用STL的multiset,有关error C2679: binary '=' : no operator defined 的错误
#include rn#include rn//学生结构体 rnstruct Studentrn char* name;rn int year;rn char* addr;rn;rn//比较函数rnstruct StudentLessrn bool operator()(const Student& s1, const Student& s2) const rn rn return s1.year < s2.year; //比较学生年龄rn rn;rnint main(void)rn using namespace std;rn //学生数据rn Student stuArray[] = rn "李强", 21, "北京" ,rn "王文", 22, "浙江" ,rn "张天", 21, "上海" ,rn "丁宏", 23, "深圳" ,rn "赵庆", 30, "天津" rn ;rn //创建multiset对象msrn multiset ms(stuArray, stuArray +5 , StudentLess());rn //统计rn cout << "学生人数: " << ms.size() << endl << endl;rn cout << "年龄为21岁的学生人数: " << ms.count(stuArray[0]) << endl << endl;rn// //打印元素rn multiset::iterator i,iend;rn iend=ms.end();rn cout << "姓名 " << "年龄 " << "地址\n";rn for(i=ms.begin(); i!=iend; i++)rn cout << (*i).name <<< (*i).year << ' ' << (*i).addr << endl;rn cout << endl;rnrn return 0;rnrn===================================================================rn错误信息:rncompiling...rnmain.cpprnF:\编程\图书馆\C++ STL开发技术导引\12\Chapter12_4\main.cpp(33) : <em>error</em> C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class std::_Tree >::_Kfn,struct StudentLess,class std::allocator >::iterator' (or there is no acceptable conversion)rnF:\编程\图书馆\C++ STL开发技术导引\12\Chapter12_4\main.cpp(35) : <em>error</em> C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class std::_Tree >::_Kfn,struct StudentLess,class std::allocator >::iterator' (or there is no acceptable conversion)rn执行 cl.exe 时出错.rnrnChapter12_4.exe - 1 <em>error</em>(s), 0 warning(s)rnrnrnrn请问如何解决????????????????????????????水平太差,勿见笑啊rn
这个错误怎么解决,求助,error C2679: binary '<
#includern#includern#includern#includern#includernusing namespace std;rntypedef map months_type;rntemplate rnostream& operator<<<<<,class strnrn
error C2679: binary '=' : no operator 这是什么错误呀?
<em>error</em> C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class CString' (or there is no acceptable conversion)
模版例题,运行提示错误:“ error C2679: 二进制“=“.....”。可是重载了"="?
书上的一个例题,运行没有成功提示:rn[color=#FF0000]1>模版stack.cpprn1>g:\vc++9.0\模版stack\模版stack\模版stack.cpp(22) : <em>error</em> C2679: 二进制“=”: 没有找到接受“const MyClass”类型的右操作数的运算符(或没有可接受的转换)rn1> g:\vc++9.0\模版stack\模版stack\模版stack.cpp(49): 可能是“MyClass &MyClass::operator =(MyClass &)”[/color]rnrn可是有“ MyClass& operator =(MyClass& myc)“这是怎么回事?rnrn[code=C/C++]#include "stdafx.h"rn#include "iostream"rnusing namespace std;rn#include "string.h"rntemplateclass MyStackrnrn int CItem;rn T StackBuff[i];rnpublic:rn MyStack(void):CItem(i)rn rn void push(const T item);rn T pop(void);rn;rnrntemplatevoid MyStack::push(const T item)rnrn if(CItem>0)rn StackBuff[--CItem]=item;// <em>error</em> C2679: 二进制“=”: 没有找到接受“const MyClass”类型的右操作数的运算符(或没有可接受的转换)rn elsern throw "stack overflow <em>error</em>";rn return;rnrnrntemplateT MyStack::pop(void)rnrn if(CItem=MAX_SIZE)rn rn strncpy_s(text,str,MAX_SIZE-1);rn str[MAX_SIZE]='\0';rn rn elsern strcpy_s(text,str);rn rn;rnrntypedef MyStackIstack;rntypedef MyStackFstack;rntypedef MyStackMYstack;rnrnint _tmain(int argc, _TCHAR* argv[])rnrn Istack istack;rn Fstack fstack;rn MYstack mystack;rn int i1,i2;rn double f1,f2;rn istack.push(1);rn istack.push(2);rn i1=istack.pop();rn i2=istack.pop();rn printf("%d,%d",i1,i2);rn fstack.push(5.3);rn fstack.push(43.3);rn f1=fstack.pop();rn f2=fstack.pop();rn printf("%f,%f",f1,f2);rn MyClass str1,str2,str3;rn str1.set("abc");rn str2.set("aaa");rn str3.set("012345678");rn printf("%s\n%s\n%s\n",str1.get(),str2.get(),str3.get());rn mystack.push(str1);rn mystack.push(str2);rn mystack.push(str3);rn str1=mystack.pop();rn str2=mystack.pop();rn str3=mystack.pop();rn printf("%s\n%s\n%s\n",str1.get(),str2.get(),str3.get());rn return 0;rn[/code]rn
error C2679: binary '*' : no operator defined...这是什么编译错误呢?
源程序:rn const Vec4f rgb(0.912f, 0.717f, 0.505f, 1.0f);rn const Vec4f r_amb = 0.1 * rgb;rn const Vec4f r_diff = 1.0 * rgb;rn const Vec4f r_spec = 0.3 * rgb;rnrnrnrnrnrn编译错误:rnterrify.cpprnD:\博士论文\opengl_Grand_canyon_gatech\awu - terrify\awu-terrify\awu-terrify\terrify.cpp(167) : <em>error</em> C2679: binary '*' : no operator defined which takes a right-hand operand of type 'const class TVec4' (or there is no acceptable conversion)rnD:\博士论文\opengl_Grand_canyon_gatech\awu - terrify\awu-terrify\awu-terrify\terrify.cpp(168) : <em>error</em> C2679: binary '*' : no operator defined which takes a right-hand operand of type 'const class TVec4' (or there is no acceptable conversion)rnD:\博士论文\opengl_Grand_canyon_gatech\awu - terrify\awu-terrify\awu-terrify\terrify.cpp(169) : <em>error</em> C2679: binary '*' : no operator defined which takes a right-hand operand of type 'const class TVec4' (or there is no acceptable conversion)rnD:\博士论文\opengl_Grand_canyon_gatech\awu - terrify\awu-terrify\awu-terrify\terrify.cpp(715) : <em>error</em> C2297: '*' : illegal, right operand has type 'void'rnError executing cl.exe.rnCreating browse info file...rnrnterrify.exe - 4 <em>error</em>(s), 4 warning(s)
error C2679: 二进制“>>” : 没有找到接受“A  A
#include "stdafx.h"rn#includern#includern#includern#includernusing namespace std;rnrnclass LessThanrnrnpublic:rn bool operator()(const string & s1,const string & s2)rn return s1.size()rnvoid display_vector(const vector &vec,ostream &os=cout,int len=8)rnrn vector::const_iterator iter=vec.begin(),end_it=vec.end();rnrn int elem_cnt=1;rn while(iter!=end_it)rn os<<>word)rn text.push_back(word);rnrn sort(text.begin(),text.end(),LessThan());rn display_vector(text,ofile);rn return 0;rnrn以上是源代码,我用VC.NET2003编译的,在VC6.0也试过,都是出现以下的ERROR:rng:\My Documents\Visual Studio Projects\ESSENTIAL C++\test\3.2\3.2\3.2.cpp(41) : <em>error</em> C2679: 二进制“>>” : 没有找到接受“A  A  rng:\My Documents\Visual Studio Projects\ESSENTIAL C++\test\3.2\3.2\3.2.cpp(41) : fatal <em>error</em> C1903: 无法从以前的错误中恢复;正在停止编译rn我就不明白<em>问题</em>出在哪~?请大虾们帮帮小弟~。。
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CString str;rn switch(m_Student)rn rn case 0:rn str= "张三:";rn if(m_Lesson1)rn str=str+"数学 ";rn if(m_Lesson2)rn str=str+"哲学 ";rn if(m_Lesson3) rn str=str+"医学 ";rn break;
为什么用出错?Error 1 error C2679: binary '< : no operator found which takes a right-
#includern#includern#includern#includern#includern#includern#includernusing namespace std;rnclass studentrnrnprivate:rn string m_strName;rn int m_intNo;rn int m_intChinese;rn int m_intMath;rn int m_intTotal;rnpublic:rn student(string name,int no,int ch,int math):m_strName(name),m_intNo(no),m_intChinese(ch),m_intMath(math)rn rn m_intTotal=m_intChinese+m_intMath;rn rn string getname() constrn rn return m_strName;rn rn int getno() constrn rn return m_intNo;rn rn int getchinese() constrn rn return m_intChinese;rn rn int getmath() constrn rn return m_intMath;rn rn int gettotal() constrn rn return m_intTotal;rn rnrn bool operator<
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