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clearn/dynamisch.cc

86 lines
1.2 KiB
C++
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2017-02-07 20:03:49 +00:00
#include <stdio.h>
#include <string.h>
#include <iostream.h>
class daten
{
public:
daten()
{
count++;
if (pFirst == 0)
{
pFirst= this;
}
else
{
for (daten *pDdd = pFirst; pDdd->pNext; pDdd = pDdd->pNext)
{ }
pDdd->pNext=this;
}
pNext=0;
}
static daten *first()
{ return pFirst; }
daten *next()
{ return pNext; }
void init()
{ a = 0;
strcpy(name,""); }
void increment(char *nstr)
{ a++;
strcpy(name, nstr); }
void decrement()
{ a--; }
int wert()
{ return a; }
char *nnn()
{ return name; }
protected:
static daten *pFirst;
daten *pNext;
static int count;
int a;
char name[50];
};
daten *daten::pFirst = 0;
int daten::count = 0;
int main(void)
{
daten *pDdd;
pDdd = new daten();
if (pDdd == 0) {puts("OUT OF MEM");}
pDdd->init();
pDdd->increment("eins");
pDdd = new daten();
if (pDdd == 0) {puts("OUT OF MEM");}
pDdd-> init();
pDdd->increment("Zwei");
pDdd->increment("Zwei");
pDdd = daten::first();
cout << "Hallo " << pDdd->wert() << " " << pDdd->nnn() << "\n";
pDdd = pDdd->next();
cout << "Hallo " << pDdd->wert() << " " << pDdd->nnn() << "\n";
}