将每一个字符串处理抽象成一个类，而不再是一个过程函数，这段程序提供的功能如下

相关源代码：

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

#define MAX 12					//系统默认的值为5
typedef struct Struct_string
{
//属性
	int current_number;
	char *pstr[MAX];         
//函数行为  
//用户设置字符串
	int (*Set_string_form_user) (struct Struct_string* pData, const char *pInfo,const char Judge);
	
//用户得到字符串
	int (*Get_string_form_system)(const struct Struct_string* pData,int Serial_number,char **p);
	
//系统清除 char *pstr[MAX];指向的内存为空  内部函数使用
	void (*clear)(struct Struct_string* pData );
	
}Struct_string,*PStruct_string;

int Set_string_form_user(struct Struct_string* pData, const char *pInfo,const char Judge)
{
	char *pNewInfo = NULL;
	char *pNext    = NULL;
	char *pStrItem = NULL;
	int i=0;
	int nItemCount = 0;
	int len = 0;
	//第一步 判断用户输入的是否为正确的值  1.传入非法指针   或者 传入空
	if (NULL == pInfo || ((len = strlen(pInfo))<=0) || pData->current_number >= MAX) //数据打到了上限
	{
		printf("User data is illegal\n");
		return -1;
	}
	//第二步进行内存释放功能
	pData->clear(pData);
	//第三步进行数据的拷贝  
	pNewInfo = (char *) malloc(len + 1);
	strcpy(pNewInfo, pInfo);
	
	//统计个数           
	nItemCount = 1; 
	pNext = strchr(pNewInfo, Judge);
	while (pNext)							//这里没有必要进行统计
	{
		nItemCount++;
		pStrItem = pNext + 1;
		pNext = strchr(pStrItem, Judge);
	}

	//填充数据
	pStrItem = pNewInfo;
	for (i = 0; i < nItemCount; i++)			
	{
		pNext = strchr(pStrItem, Judge);
		if(pNext)
		{
			*pNext = 0;
			if(strlen(pStrItem) > 0)
			{
				len = strlen(pStrItem);
				pData->pstr[pData->current_number] = (char *) malloc(len + 1) ;
				strcpy(pData->pstr[pData->current_number], pStrItem);
				pData->current_number++;
				if(pData->current_number > MAX)
				{
					printf("Out of data range\n");
					return -1;
				}
			}
			pStrItem = pNext + 1;
		}
		else				
		{
			if (strlen(pStrItem) > 0)
			{
				len = strlen(pStrItem);  			//加入到最后一个数据找那个
				pData->pstr[pData->current_number] = (char *) malloc(len + 1) ;
				strcpy(pData->pstr[pData->current_number], pStrItem);
				pData->current_number++; 
				if(pData->current_number > MAX)
				{
					printf("Out of data range\n");
					return -1;
				}
			}
			break;
		}
	}
	//最后一步 释放内存
	free(pNewInfo);
	return 0;
}

void clear(struct Struct_string* pData )
{
	int i=0;
	if(pData->current_number <=0)
	{
		return ;
	}
	
	for( i=0;i<pData->current_number;i++)
	{
		free(pData->pstr[i]);
		pData->pstr[i] = NULL;
	}
	pData->current_number=0;
}

//进行深度拷贝，复制出去值必须要利用free释放
int Get_string_form_system(const struct Struct_string* pData,int Serial_number,char **p)
{
	int len =0;
	if( Serial_number<0 || Serial_number > pData->current_number-1)	//判断是否在范围内
	{
		printf("Exceeding the range of read data\n");
		return -1;
	}
	len = strlen(pData->pstr[Serial_number]);  			//加入到最后一个数据找那个
	*p  = (char *) malloc(len + 1);
	strcpy(*p,pData->pstr[Serial_number]);
	return 0;
}

static Struct_string test_string;
int main()
{
	char *p_test = NULL;
//初始化数据
	memset(test_string.pstr,0,MAX * sizeof (char*));
	test_string.current_number =0;
	test_string.Set_string_form_user =Set_string_form_user;
	test_string.Get_string_form_system=Get_string_form_system;
	test_string.clear =clear;
	
//	if(0!=test_string.Set_string_form_user(&test_string,"add,hu,,,,,,,,huhu"))
	if(0!=test_string.Set_string_form_user(&test_string,",,,hu,,,-,,,,,,,huxiaoguang",'-'))
	{
		printf("set data is fall\n");
		return 0;
	}
	
	if(0!=test_string.Get_string_form_system(&test_string,0,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		printf("the first\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//hu 
	free(p_test);	
	
	
	if(0!=test_string.Get_string_form_system(&test_string,1,&p_test))//,&p_test
	{
		printf("read data is fall\n");//xiao 
		printf("the second\n");
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
	
	if(0!=test_string.Get_string_form_system(&test_string,2,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		printf("the third\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//jixiao 
	free(p_test);
	
	if(0!=test_string.Get_string_form_system(&test_string,3,&p_test))//,&p_test
	{
		printf("read data is fall\n");//hu
		printf("the fourth\n");
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
	
	if(0!=test_string.Set_string_form_user(&test_string,"hu,xiao,jixiao,hu,yang"))
	{
		printf("set data is fall\n");
		return 0;
	}
	
	if(0!=test_string.Get_string_form_system(&test_string,0,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//hu 
	free(p_test);	
	
	
	if(0!=test_string.Get_string_form_system(&test_string,1,&p_test))//,&p_test
	{
		printf("read data is fall\n");//xiao 
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
	
	if(0!=test_string.Get_string_form_system(&test_string,2,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//jixiao 
	free(p_test);
	
	if(0!=test_string.Get_string_form_system(&test_string,3,&p_test))//,&p_test
	{
		printf("read data is fall\n");//hu
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
	
//重新复制设置
///////////////////////////////////////////////////////////////////////////////		
	if(0!=test_string.Set_string_form_user(&test_string,"xiao,huxiao,husn,ren ming i,hxhg"))
	{
		printf("set data is fall\n");
		return 0;
	}
	
	if(0!=test_string.Get_string_form_system(&test_string,0,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//hu 
	free(p_test);	
	
	
	if(0!=test_string.Get_string_form_system(&test_string,1,&p_test))//,&p_test
	{
		printf("read data is fall\n");//xiao 
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
	if(0!=test_string.Get_string_form_system(&test_string,2,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//jixiao 
	free(p_test);
	
	if(0!=test_string.Get_string_form_system(&test_string,3,&p_test))//,&p_test
	{
		printf("read data is fall\n");//hu
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
///////////////////////////////////////////////////////////////////////////////	
	
	if(0!=test_string.Set_string_form_user(&test_string,"jixiao,renwu,hu,xiaoghu,hxhg"))
	{
		printf("set data is fall\n");
		return 0;
	}
	
	if(0!=test_string.Get_string_form_system(&test_string,0,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//hu 
	free(p_test);	
	
	
	if(0!=test_string.Get_string_form_system(&test_string,1,&p_test))//,&p_test
	{
		printf("read data is fall\n");//xiao 
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
	if(0!=test_string.Get_string_form_system(&test_string,2,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//jixiao 
	free(p_test);
	
	if(0!=test_string.Get_string_form_system(&test_string,3,&p_test))//,&p_test
	{
		printf("read data is fall\n");//hu
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
///////////////////////////////////////////////////////////////////////////////		
		if(0!=test_string.Set_string_form_user(&test_string,"xiao,huxiao,husn,ren ming i,hxhg"))
	{
		printf("set data is fall\n");
		return 0;
	}
	
	if(0!=test_string.Get_string_form_system(&test_string,0,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//hu 
	free(p_test);	
	
	
	if(0!=test_string.Get_string_form_system(&test_string,1,&p_test))//,&p_test
	{
		printf("read data is fall\n");//xiao 
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
	if(0!=test_string.Get_string_form_system(&test_string,2,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//jixiao 
	free(p_test);
	
	if(0!=test_string.Get_string_form_system(&test_string,3,&p_test))//,&p_test
	{
		printf("read data is fall\n");//hu
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
///////////////////////////////////////////////////////////////////////////////	
	
	if(0!=test_string.Set_string_form_user(&test_string,"ren,hongsh,shi,fei,hxhg"))
	{
		printf("set data is fall\n");
		return 0;
	}
	
	if(0!=test_string.Get_string_form_system(&test_string,0,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//hu 
	free(p_test);	
	
	
	if(0!=test_string.Get_string_form_system(&test_string,1,&p_test))//,&p_test
	{
		printf("read data is fall\n");//xiao 
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
	if(0!=test_string.Get_string_form_system(&test_string,2,&p_test))//,&p_test
	{
		printf("read data is fall\n");
		return 0;
	}
	
	printf("%s\n",p_test);	//jixiao 
	free(p_test);
	
	if(0!=test_string.Get_string_form_system(&test_string,3,&p_test))//,&p_test
	{
		printf("read data is fall\n");//hu
		return 0;
	}
	
	printf("%s\n",p_test);
	free(p_test);
	return 0;
}