#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#define  IN_FILE    "Test.txt"
#define  BUF_SIZE        1024
#define  ITEM_UNIT         32

int main()
{
	char  **Items = NULL;
	int   NumItem = 0, SizeItem = 0, i;
	char  buf[BUF_SIZE];
	FILE  *iFP;

	srand((unsigned int)time(NULL));
	rand();

	iFP = fopen(IN_FILE, "rt");
	if(!iFP)
	{
		perror(IN_FILE);
		exit(1);
	}

	while(fgets(buf, sizeof(buf), iFP))
	{
		char  *temp = strchr(buf, '\n');
		if(temp)
			*temp = '\0';
		temp = strtok(buf, ",");
		while(temp)
		{
			if(*temp != '\0')
			{
				if(NumItem >= SizeItem)
				{
					Items = (char **)realloc(Items, SizeItem += ITEM_UNIT);
					if(!Items)
					{
						perror("Items Buffer") ;
						exit(2);
					}
				}
				temp = strdup(temp);
				if(!temp)
				{
					perror("Item Duplicate");
					exit(3);
				}
				Items[NumItem++] = temp;
			}
			temp = strtok(NULL, ",");
		}
	}
	fclose(iFP);
	if(!NumItem)
	{
		perror("No Item");
		exit(4);
	}

//	for(i = 0; i < NumItem; ++i)
//		printf("%d=%s\n", i, Items[i]);
//	putchar('\n');

	i = (int)(rand() / (double)(RAND_MAX + 1) * (double)NumItem);
//	printf("%d=", i);
	puts(Items[i]);

	return 0;
}