Ошибка компилятора c2064

I’m trying to use STL, but the following doesn’t compile. main.cpp:

#include <set>
#include <algorithm>

using namespace std;

class Odp
{
public:

    set<int> nums;

    bool IsOdd(int i)
    {
        return i % 2 != 0;
    }

    bool fAnyOddNums()
    {
        set<int>::iterator iter = find_if(nums.begin(), nums.end(), &Odp::IsOdd);
        return iter != nums.end();
    }
};

int main()
{
    Odp o;
    o.nums.insert(0);
    o.nums.insert(1);
    o.nums.insert(2);
}

The error is:

error C2064: term does not evaluate to a function taking 1 arguments
1>          c:program filesmicrosoft visual studio 10.0vcincludealgorithm(95) : see reference to function template instantiation '_InIt std::_Find_if<std::_Tree_unchecked_const_iterator<_Mytree>,_Pr>(_InIt,_InIt,_Pr)' being compiled
1>          with
1>          [
1>              _InIt=std::_Tree_unchecked_const_iterator<std::_Tree_val<std::_Tset_traits<int,std::less<int>,std::allocator<int>,false>>>,
1>              _Mytree=std::_Tree_val<std::_Tset_traits<int,std::less<int>,std::allocator<int>,false>>,
1>              _Pr=bool (__thiscall Odp::* )(int)
1>          ]
1>          main.cpp(20) : see reference to function template instantiation '_InIt std::find_if<std::_Tree_const_iterator<_Mytree>,bool(__thiscall Odp::* )(int)>(_InIt,_InIt,_Pr)' being compiled
1>          with
1>          [
1>              _InIt=std::_Tree_const_iterator<std::_Tree_val<std::_Tset_traits<int,std::less<int>,std::allocator<int>,false>>>,
1>              _Mytree=std::_Tree_val<std::_Tset_traits<int,std::less<int>,std::allocator<int>,false>>,
1>              _Pr=bool (__thiscall Odp::* )(int)
1>          ]

What am I doing wrong?

Hi guys,

I am facing «error C2064: term does not evaluate to a function taking 1 arguments» in this program during compiler.

Please help.

Cheers,
Dev

#include <iostream>
#include <cctype> //For toupper
using namespace std;

//function declarations

//public variable
//main
int main()
{
    // Variable Declarations

        char Reply = ‘ ‘;
    char ReadChar;

    int selectnum; /* defines input*/
    int GetResult; /* defines conversion input*/

        int    results[5]={0,0,0,0,0}; /* Initialise Array*/

    cout << «n    ********* Welcome to C++ Program for Managing Exam Results ********nn»; /*Displays Title*/

    cout << »    1. Read and Store Exam Resultsn»;
    cout << »    2. Sort and Display Results in Ascending Ordern»;
    cout << »    3. Calculate Fail Raten»;
    cout << »    4. Search for a particular Resultn»;
    cout << »    5. Display All Resultn»;
    cout << »    6. Exitnnn»;

    cout << »    Enter 1/2/3/4/5/6: «;
    cin>>selectnum;

    while(selectnum > 6) /* While loop to ensure no number > 6 is inputted*/
    {
        cout << «ntError! Please enter a number between 1 to 6. na»;
        cout << «n    ********* Welcome to C++ Program for Managing Exam Results ********nn»; /*Displays Title*/
        cout << »    1. Read and Store Exam Resultsn»;
        cout << »    2. Sort and Display Results in Ascending Ordern»;
        cout << »    3. Calculate Fail Raten»;
        cout << »    4. Search for a particular Resultn»;
        cout << »    5. Display All Resultn»;
        cout << »    6. Exitnnn»;
        cout << »    Enter 1/2/3/4/5/6: «;

        cin >> selectnum;
    }

    while ((selectnum > 0 )&&(selectnum < 6)) /* While loop to allow multiple selection*/
    {

        switch (selectnum) /* Switch…Case to compare a variable to several integral values */
        {
            case 1: /*Read and Store Exam Results*/
                cout << «The current Results are:n»<<endl
                     <<«{0,0,0,0,0}»;       
                cout<<«Do you wish to update the result? (Y/N): «;

                                                ReadChar(Reply);            // ERROR LINE

                Reply=toupper(Reply); //Convert to uppercase

                                while ((Reply!=’N’)&& (Reply!=’Y’))
                {
                    cout<<«nInvalid Entry. Try again.»<<endl
                        <<«Please enter Y or N ==>»;
                    ReadChar(Reply);        // ERROR LINE
                    Reply=toupper(Reply);
                }

                if (Reply == ‘Y’)
                {
                    cin >> GetResult;

                                }   
                else if (Reply==’N’)
                {
                        cout << «n    ********* Welcome to C++ Program for Managing Exam Results ********nn»; /*Displays Title*/
                        cout << »    1. Read and Store Exam Resultsn»;
                        cout << »    2. Sort and Display Results in Ascending Ordern»;
                        cout << »    3. Calculate Fail Raten»;
                        cout << »    4. Search for a particular Resultn»;
                        cout << »    5. Display All Resultn»;
                        cout << »    6. Exitnnn»;
                        cout << »    Enter 1/2/3/4/5/6: «;
                }

                                                while (selectnum > 6) /* while statement to ensure no number > 6 is inputted*/
                {
                    cout << «nnError! Please enter a number between 1 to 6. n»;
                    cout << «n    ********* Welcome to C++ Program for Managing Exam Results ********nn»; /*Displays Title*/
                    cout << »    1. Read and Store Exam Resultsn»;
                    cout << »    2. Sort and Display Results in Ascending Ordern»;
                    cout << »    3. Calculate Fail Raten»;
                    cout << »    4. Search for a particular Resultn»;
                    cout << »    5. Display All Resultn»;
                    cout << »    6. Exitnnn»;
                    cout << »    Enter 1/2/3/4/5/6: «;
                    cin >> selectnum;
                }
                break;

        }
    }
}

I am writing a class which uses a thread and I wanted to try the new C++11 std::thread. I am compiling with Microsoft Visual Studio Pro 2013 v12.0.31101.00 Update 4. The update is from Nov 2014 so is fairly up-to-date. I can use std::thread for simple uses but in my code below I get compiler errors.

If I comment out the initialization of the thread, as in:

serial(int port) : port_(port) {} //, reader_thread(&serial::reader_thread_func) {}

Then it compiles ok.

How can I fix this?

Here is my code.

serial.hpp:

/* serial port class */
#ifndef SERIAL_
#define SERIAL_

#include <thread>

class serial
{
public:
    serial(int port) : port_(port), reader_thread(&serial::reader_thread_func) {}
    ~serial();
    bool open();
    bool close();

private:
    std::thread reader_thread;
    void reader_thread_func();
    int port_;
};

#endif // SERIAL_

serial.cpp:

#include <iostream>

#include "serial.hpp"


void serial::reader_thread_func() {
    std::cout << "reader thread running with thread id: " << std::this_thread::get_id() << 'n';
}

serial::~serial() {
    close();
}

bool serial::open() {

    close(); // in case we are already open

    std::cout << "opening port " << port_ << 'n';
    return true;
}

bool serial::close() {
    std::cout << "closing port " << port_ << 'n';
    return false;
}

main.cpp to drive:

#include "serial.hpp"

int main() {
    serial s(3);
    s.open();

    s.close();
}

Compiler errors:

1>------ Build started: Project: thread_in_class, Configuration: Debug Win32 ------
1>  serial.cpp
1>c:program files (x86)microsoft visual studio 12.0vcincludefunctional(1149): error C2064: term does not evaluate to a function taking 0 arguments
1>          class does not define an 'operator()' or a user defined conversion operator to a pointer-to-function or reference-to-function that takes appropriate number of arguments
1>          c:program files (x86)microsoft visual studio 12.0vcincludefunctional(1137) : see reference to function template instantiation 'void std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>::_Do_call<,>(std::tuple<>,std::_Arg_idx<>)' being compiled
1>          c:program files (x86)microsoft visual studio 12.0vcincludefunctional(1137) : see reference to function template instantiation 'void std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>::_Do_call<,>(std::tuple<>,std::_Arg_idx<>)' being compiled
1>          c:program files (x86)microsoft visual studio 12.0vcincludethrxthread(195) : see reference to function template instantiation 'void std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>::operator ()<>(void)' being compiled
1>          c:program files (x86)microsoft visual studio 12.0vcincludethrxthread(195) : see reference to function template instantiation 'void std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>::operator ()<>(void)' being compiled
1>          c:program files (x86)microsoft visual studio 12.0vcincludethrxthread(192) : while compiling class template member function 'unsigned int std::_LaunchPad<_Target>::_Run(std::_LaunchPad<_Target> *)'
1>          with
1>          [
1>              _Target=std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>
1>          ]
1>          c:program files (x86)microsoft visual studio 12.0vcincludethrxthread(187) : see reference to function template instantiation 'unsigned int std::_LaunchPad<_Target>::_Run(std::_LaunchPad<_Target> *)' being compiled
1>          with
1>          [
1>              _Target=std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>
1>          ]
1>          c:program files (x86)microsoft visual studio 12.0vcincludethrxthread(205) : see reference to class template instantiation 'std::_LaunchPad<_Target>' being compiled
1>          with
1>          [
1>              _Target=std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>
1>          ]
1>          c:program files (x86)microsoft visual studio 12.0vcincludethread(49) : see reference to function template instantiation 'void std::_Launch<std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>>(_Thrd_t *,_Target &&)' being compiled
1>          with
1>          [
1>              _Target=std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>
1>          ]
1>          c:usersangusdocumentsvisual studio 2013projectsthread_in_classthread_in_classserial.hpp(10) : see reference to function template instantiation 'std::thread::thread<void(__thiscall serial::* )(void),>(_Fn &&)' being compiled
1>          with
1>          [
1>              _Fn=void (__thiscall serial::* )(void)
1>          ]
1>  main.cpp
1>c:program files (x86)microsoft visual studio 12.0vcincludefunctional(1149): error C2064: term does not evaluate to a function taking 0 arguments
1>          class does not define an 'operator()' or a user defined conversion operator to a pointer-to-function or reference-to-function that takes appropriate number of arguments
1>          c:program files (x86)microsoft visual studio 12.0vcincludefunctional(1137) : see reference to function template instantiation 'void std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>::_Do_call<,>(std::tuple<>,std::_Arg_idx<>)' being compiled
1>          c:program files (x86)microsoft visual studio 12.0vcincludefunctional(1137) : see reference to function template instantiation 'void std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>::_Do_call<,>(std::tuple<>,std::_Arg_idx<>)' being compiled
1>          c:program files (x86)microsoft visual studio 12.0vcincludethrxthread(195) : see reference to function template instantiation 'void std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>::operator ()<>(void)' being compiled
1>          c:program files (x86)microsoft visual studio 12.0vcincludethrxthread(195) : see reference to function template instantiation 'void std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>::operator ()<>(void)' being compiled
1>          c:program files (x86)microsoft visual studio 12.0vcincludethrxthread(192) : while compiling class template member function 'unsigned int std::_LaunchPad<_Target>::_Run(std::_LaunchPad<_Target> *)'
1>          with
1>          [
1>              _Target=std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>
1>          ]
1>          c:program files (x86)microsoft visual studio 12.0vcincludethrxthread(187) : see reference to function template instantiation 'unsigned int std::_LaunchPad<_Target>::_Run(std::_LaunchPad<_Target> *)' being compiled
1>          with
1>          [
1>              _Target=std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>
1>          ]
1>          c:program files (x86)microsoft visual studio 12.0vcincludethrxthread(205) : see reference to class template instantiation 'std::_LaunchPad<_Target>' being compiled
1>          with
1>          [
1>              _Target=std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>
1>          ]
1>          c:program files (x86)microsoft visual studio 12.0vcincludethread(49) : see reference to function template instantiation 'void std::_Launch<std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>>(_Thrd_t *,_Target &&)' being compiled
1>          with
1>          [
1>              _Target=std::_Bind<true,void,std::_Pmf_wrap<void (__thiscall serial::* )(void),void,serial,>,>
1>          ]
1>          c:usersangusdocumentsvisual studio 2013projectsthread_in_classthread_in_classserial.hpp(10) : see reference to function template instantiation 'std::thread::thread<void(__thiscall serial::* )(void),>(_Fn &&)' being compiled
1>          with
1>          [
1>              _Fn=void (__thiscall serial::* )(void)
1>          ]
1>  Generating Code...
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========