Hjælp med at lave Lottotræknings program i c++

Tak for det.. nu fik jeg det "built" og compile med de her resultater:

1>------ Build started: Project: Full LynLotto opgave, Configuration: Debug Win32 ------
1>Compiling...
1>Skipping... (no relevant changes detected)
1>Full LynLotto opgave.cpp
1>Build log was saved at "file://c:\Finnur\Elektrikingenior IOT\Reeksam i E-DTP\Full LynLotto opgave\Full LynLotto opgave\Debug\BuildLog.htm"
1>Full LynLotto opgave - 0 error(s), 0 warning(s)
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========

Har lavet de ændringer som du snakkeder om
også i int main, har jeg gjort det her
//srand((unsigned)&c);



Men så hvis jeg vil så debug, så kommer bare en
kæmpe fejl.

Debug Assertion Failed!

Program:...
File:c:\program files\microsoft visual studio8\vc\include\list
Line:262

Expression: list iterator not decrementable

For information on how your program can cause an assertion failure, see the visualC++ doocumentation on asserts.

(press retry to debug the application)

"Abort" "Retry" "Ignore"



Hele Koden:

Kode 

#include "stdafx.h"

#include <iostream>
#include <string>
#include <list>
#include <cstdlib>
#include <algorithm> //find()
#include <sstream>  //ostringstream
#include <iomanip> //setfill() setw();

using namespace std;

const int NUMBER_COUNT = 7;
const int NUMBER_MAX = 36;
const int NUMBER_MIN = 1;
const int ROWS_COUNT = 10;


//*****************************************************************************
//    Function that returns random number between NUMBER_MIN and NUMBER_MAX
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
int Bold()
{
    return (rand() % (NUMBER_MAX - NUMBER_MIN + 1) + NUMBER_MIN);
}

//*****************************************************************************
// Returns random number between NUMBER_MIN and NUMBER_MAX
// Will always return a different random number until this function is call
// whith new_draw=true.
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
int Kugle(bool new_draw = false)
{
    static list<int> drawn_lst; //list to keep values that have been draw.
    if (new_draw) // Clean and return.
    {
        drawn_lst.clear(); //New deal, clears the list
    }
    else if (drawn_lst.size() >= (unsigned int)NUMBER_MAX)
	//else if (drawn_lst.size() >= NUMBER_MAX)
    {
        cout << "*** No more balls - clear list ***" << endl;  
    }
    else
    {
        int ball = 0;
        do
        {
            ball = Bold();
        }
        while (drawn_lst.end() != find(drawn_lst.begin(), drawn_lst.end(), ball));
        drawn_lst.push_back(ball);
    }
    return drawn_lst.back();
}


//*****************************************************************************
// Inserts random numbers in the list lst.
// Count of random numbers are NUMBER_COUNT.
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void Saturday(list<int> &lst)
{
    for (int i = 0;NUMBER_COUNT > i;i++)
    {
        lst.push_back(Kugle());
    }
}


//*****************************************************************************
// Inserts random numbers in list and then insert list in list of list(row_lst).
// cont of random numbers are NUMBER_COUNT
// cont of list in list are ROWS_COUNT
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void Lynlotto(list< list<int> > &row_lst)                                          //void fyrir int
{
    for(int i=0; ROWS_COUNT>i;i++)
    {
        list<int> lst;
        Kugle(true);  //Clears the already drawn list of numbers.
        Saturday(lst); //add random numbers to lst
        row_lst.push_back(lst);
    }
}

//*****************************************************************************
//   converts list of int to string e.g. [2] [23] [8] ... etc.
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
std::string listToString(list<int> &lst)
{
    std::ostringstream o;
    list<int>::iterator it;
    for ( it = lst.begin() ; it != lst.end(); it++ )
    {
        o << " [" << setw(2) << setfill(' ') << *it << "]";
    }
    return o.str();
}

//*****************************************************************************
//   The main funtion
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
int main(int c, char **a)
{
    //srand((unsigned)&c);
    list< list<int> > lynlotto_lst;  //This is a list of list of integers
    list<int> saturday_lst;  //this is a list of integers
    int bonus_number;  //to keep the bonus number.

    Saturday(saturday_lst); //add random numbers to lst
    bonus_number = Kugle(); //Draw the bonus number
    Kugle(true); //Clear drawn nubmer list.
    Lynlotto(lynlotto_lst); //add random numbers to lst x 10

    cout << endl << "The lotto numbers are:" << endl << "   " << listToString(saturday_lst) << " bonus[" << Kugle() << "]" << endl;

    int ln_num = 0;
    list< list<int> >::iterator it_lyn_rows;
     cout << "The selected numbers are:" << endl;
     for ( it_lyn_rows = lynlotto_lst.begin() ; it_lyn_rows != lynlotto_lst.end(); it_lyn_rows++ )
    {
        ln_num++;
        cout <<  setw(2) << setfill(' ')<< ln_num << ":" <<listToString(*it_lyn_rows) << endl;
    }



    cout << endl << endl;
    return 0;
}

har i nogen idéa hvorfor det kommer,kan det være den udgave af c++ som jeg har,
(Visual c++ 2005 express edition)

Hilsen
Finns

hvis jeg går ind i
File:c:\program files\microsoft visual studio8\vc\include\list
og finder Line:262
Så står der:
#if _HAS_ITERATOR_DEBUGGING
if (this->_Mycont == 0 || (_Ptr = _Prevnode(_Ptr))
== ((_Myt *)this->_Mycont)->_Myhead)
{
_DEBUG_ERROR
("list iterator not decrementable"); LINE:262
_SCL_SECURE_TRAITS_OUT_OF_RANGE;
}

Det her bare lort,
Hilsen Finns

hvis jeg går ind i
File:c:\program files\microsoft visual studio8\vc\include\list
og finder Line:262
Så står der:
#if _HAS_ITERATOR_DEBUGGING
if (this->_Mycont == 0 || (_Ptr = _Prevnode(_Ptr))
== ((_Myt *)this->_Mycont)->_Myhead)
{
_DEBUG_ERROR
("list iterator not decrementable"); LINE:262
_SCL_SECURE_TRAITS_OUT_OF_RANGE;
}

Det her bare lort,
Hilsen Finns

Jep, det er, som Bertel siger, fordi du prøver at hente noget ud af en tom container. Du har lige kaldt clear() metoden, som tømmer containeren, derefter prøver du at hente noget, og det må man ikke.

Kode 

#include "stdafx.h"

#include <iostream>
#include <string>
#include <list>
#include <cstdlib>
#include <algorithm> //find()
#include <sstream>  //ostringstream
#include <iomanip> //setfill() setw();

using namespace std;

const int NUMBER_COUNT = 7;
const int NUMBER_MAX = 36;
const int NUMBER_MIN = 1;
const int ROWS_COUNT = 10;


//*****************************************************************************
//    Function that returns random number between NUMBER_MIN and NUMBER_MAX
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
int Bold()
{
    return (rand() % (NUMBER_MAX - NUMBER_MIN + 1) + NUMBER_MIN);
}

//*****************************************************************************
// Returns random number between NUMBER_MIN and NUMBER_MAX
// Will always return a different random number until this function is call
// whith new_draw=true.
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
int Kugle(bool new_draw = false)
{
    static list<int> drawn_lst; //list to keep values that have been draw.
    if (new_draw) // Clean and return.
    {
        //drawn_lst.clear(); //New deal, clears the list
    }
    else if (drawn_lst.size() >= (unsigned int)NUMBER_MAX)  //Skifti á þessum else if skipunum
	//else if (drawn_lst.size() >= NUMBER_MAX)
    {
        cout << "*** No more balls - clear list ***" << endl;  
		//drawn_lst.clear();
    }
    else
    {
        int ball = 0;
        do
        {
            ball = Bold();
        }
        while (drawn_lst.end() != find(drawn_lst.begin(), drawn_lst.end(), ball));
        drawn_lst.push_back(ball);
    }
    return drawn_lst.back();
}


//*****************************************************************************
// Inserts random numbers in the list lst.
// Count of random numbers are NUMBER_COUNT.
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void Saturday(list<int> &lst)
{
    for (int i = 0;NUMBER_COUNT > i;i++)
    {
        lst.push_back(Kugle());
    }
}


//*****************************************************************************
// Inserts random numbers in list and then insert list in list of list(row_lst).
// cont of random numbers are NUMBER_COUNT
// cont of list in list are ROWS_COUNT
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void Lynlotto(list< list<int> > &row_lst)                                          //void fyrir int
{
    for(int i=0; ROWS_COUNT>i;i++)
    {
        list<int> lst;
        Kugle(true);  //Clears the already drawn list of numbers.
        Saturday(lst); //add random numbers to lst
        row_lst.push_back(lst);
    }
}

//*****************************************************************************
//   converts list of int to string e.g. [2] [23] [8] ... etc.
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
std::string listToString(list<int> &lst)
{
    std::ostringstream o;
    list<int>::iterator it;
    for ( it = lst.begin() ; it != lst.end(); it++ )
    {
        o << " [" << setw(2) << setfill(' ') << *it << "]";
    }
    return o.str();
}

//*****************************************************************************
//   The main funtion
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
int main(int c, char **a)
{
	//srand((unsigned)&c);
    list< list<int> > lynlotto_lst;  //This is a list of list of integers
    list<int> saturday_lst;  //this is a list of integers
    int bonus_number;  //to keep the bonus number.

    Saturday(saturday_lst); //add random numbers to lst
    bonus_number = Kugle(); //Draw the bonus number
    Kugle(true); //Clear drawn number list.
    Lynlotto(lynlotto_lst); //add random numbers to lst x 10

    cout << endl << "The lotto numbers are:" << endl << "   " << listToString(saturday_lst) << " bonus[" << Kugle() << "]" << endl;

    int ln_num = 0;
    list< list<int> >::iterator it_lyn_rows;
     cout << "The selected numbers are:" << endl;
     for ( it_lyn_rows = lynlotto_lst.begin() ; it_lyn_rows != lynlotto_lst.end(); it_lyn_rows++ )
    {
        ln_num++;
        cout <<  setw(2) << setfill(' ')<< ln_num << ":" <<listToString(*it_lyn_rows) << endl;
    }



    cout << endl << endl;
    return 0;
}

Kode 

int Kugle(bool new_draw = false)
{
    static list<int> drawn_lst; //list to keep values that have been draw.
    if (new_draw) // Clean and return.
    {
        drawn_lst.clear(); //New deal, clears the list
        return 0;
    }
    else if (drawn_lst.size() >= (unsigned int)NUMBER_MAX)  //Skifti á þessum else if skipunum
	//else if (drawn_lst.size() >= NUMBER_MAX)
    {
        cout << "*** No more balls - clear list ***" << endl;
		//drawn_lst.clear();
    }
    else
    {
        int ball = 0;
        do
        {
            ball = Bold();
        }
        while (drawn_lst.end() != find(drawn_lst.begin(), drawn_lst.end(), ball));
        drawn_lst.push_back(ball);
    }
    return drawn_lst.back();
}