C語言 uthash哈希使用範例的代碼

在代碼期間，將代碼過程比較重要的代碼段作個收藏，以下的代碼內容是關於C語言 uthash哈希使用範例的代碼，應該對碼農有些好處。 

#include "uthash.h"
#include <stdio.h>
#include <stdlib.h>
struct packet
{
	char msg[10]; 
};

int main()
{
	int i;

	printf ("hash count = %d n", HASH_COUNT(hash_packet));

	for (i=0; i<10; i++)
	{
		pkt->key = i;
		sprintf (pkt->msg, "i=%d", i);

		HASH_FIND_INT(hash_packet, &i, tmp);
		if (tmp != NULL)
		{
			printf ("The key(%d) exists in hash. n", i);
			continue;
		}
		HASH_ADD_INT(hash_packet, key, pkt);
		printf ("insert item. key=%d,value=%p n", i, pkt);
	}
	printf ("hash count = %d n", HASH_COUNT(hash_packet));

	for (i=0; i<13; i++)
	{
		HASH_FIND_INT(hash_packet, &i, tmp);
		if (tmp == NULL)
		{
			printf ("find not item. key=%d,value=%p n", i, tmp);
			continue;
		}
		printf ("find item. key=%d,value=%p n", i, tmp);
	}

	printf ("hash count = %d n", HASH_COUNT(hash_packet));

		printf (" %d => %s n", mytemp->key, mytemp->msg);
	for (i=0; i<13; i++)
	{
		HASH_FIND_INT(hash_packet, &i, tmp);
		if (tmp == NULL)
		{
			printf ("find not item. key=%d,value=%p n", i, tmp);
			continue;
		}
		HASH_DEL(hash_packet, tmp);
		free(tmp);
		printf ("delete itme. key=%d,value=%p n", i, tmp);
	}
	printf ("hash count = %d n", HASH_COUNT(hash_packet));

	system("pause");
	return 0;
}     複製代碼