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#include <stdio.h>
class A
{
private:
int id;
A() {}//°Ñ¹¹Ô캯Êý·ÅÔÚprivate£ºÏÂÄ¿µÄÊÇÔÚÀàÍâ²»ÄÜÔÚÕ»ÉÏÖ±½Ó·ÖÅä¿Õ¼ä¶¨Òå¶ÔÏó¡£
public:
static A *pt;
static A *instance()
{
if (pt == NULL)//×¢ÒâÊÇË«µÈºÅ£¬»¹ÓкÃÏñÔÚC++ÖÐÓÃnull ²»ºÃʹ¡£
{
pt=new A;
return pt;
}
else
return pt;
}
~A()
{
delete pt;//ÒòΪ¿ª±ÙÁ˶ѿռ䣬ҪÓÃdelete ÊÍ·Å¡£
}
void id_set(int x)
{
id=x;
}
void id_get()
{
printf("%d",id);
}
};
A* A::pt=NULL;//¾²Ì¬³ÉÔ±±äÁ¿Ö»ÄÜÔÚÀàÍâ³õʼ»¯¡£
int main()
{
//´ËÀ಻ÄÜÔÚÕ»ÉÏ·ÖÅä¶ÔÏóÖ»ÄÜͨ¹ýÀàÖÐÌṩµÄº¯Êý½Ó¿ÚÓÃnewÔÚ¶ÑÉÏ·ÖÅä¶ÔÏó¡£
A *ppt=A::instance();
ppt->id_set(10);
ppt->id_get();
A *ppt1=A::instance();
ppt1->id_get();
ppt1->id_set(5);
ppt->id_get();
return 0;//ÔÚº¯Êý½áÊøÊ±×Ô¶¯µ÷ÓÃÎö¹¹º¯Êý~A£¨£©£»
}
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main.c
#include <windows.h>
#include "resource.h"
#define DEBUG 0
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#ifndef STASH_H
#define STASH_H
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int size; /* Size of each space */
int quantity; /* Number of storage spaces */
int next; /* Next empty space */
/* Dynamically allocated array of bytes: */
unsigned char* ......
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#include <stdio.h>
void *max(void *base, unsigned int nmemb, unsigned int size,
int (*compar)(const void *, const void *))
{
int i;
void* max_data = base;
char* tmp = base;
&nbs ......