#include <iostream>
using namespace std;

class prime
{
    public:
    prime() {}
    ~prime() {}
    inline bool is_prime(unsigned long &number);
    void search_prime(unsigned long &list_end);

    private:
    bool array_null(const unsigned long *value,unsigned long &temp);

};

bool array_null(const unsigned long *value, unsigned long &temp)
{
    if (value==0)
    {
        return true;
        temp++;
        array_null(++value,temp);
    }
    else
    {
        return false;
    }
}

bool prime::is_prime(unsigned long &number)
{
    for (unsigned long i=2;i<number;i++)
    {
        if ((number % i) == 0) return false;
    }
    return true;
}

void prime::search_prime(unsigned long &list_end)
{
    unsigned long *array=new unsigned long[list_end];
    for (unsigned long i=2;i<list_end;i++)
    {
        array_null(&array[2],i);
        if (is_prime(i))
        {
            for (int j=2;j*i<=list_end;j++)
            {
                array[j*i]=0; //0 = KEINE PRIMZAHL
            }
        }
     }
}

int main()
{
    /*prime test;
    unsigned long a=600011;
    cout << test.is_prime(a) << endl;*/

    return 0;
}

Compiling: C:\MinGW\Andi\prime.cpp
Linking console executable: C:\MinGW\Andi\prime.exe
C:\MinGW\Andi\prime.o:prime.cpp:(.text+0x164): undefined reference to `prime::array_null(unsigned long const*, unsigned long&)'
collect2: ld returned 1 exit status
Process terminated with status 1 (0 minutes, 0 seconds)
0 errors, 0 warnings

Checking for existence: C:\MinGW\Andi\prime.exe

Findet von euch jemand den Fehler......den der blöde Compiler nicht anzeigt :(.

MfG
Stromberg

Oh verdammt. --> PEINLICH

nö