C语言数组按协议存储与按协议解析数据的实现

struct Data_Info
{
 char serial_num ;  //序列号 
 char property ;  //属性 
 char sample_name[18]; //分类名称 
};

char *name[] = 
{
 "水果",
 "蔬菜",
 "啤酒",
 "酒精",
 "柴油",
 "娃哈哈",
 "奶茶",
 "雪碧",
 "可乐",
 "硫酸",
 "盐酸",
 "硝酸" 
};

//创建样本库数据 
void Create_Simple_Data(char *_data)
{
 int i ;
 int count_num = 1 ;
 for(i = 0 ; i < 600 ; i++)
 {
 if(i % 20 == 0)
 {
  _data[i] = count_num ;
  _data[i+1] = rand()%2 ;
  memcpy(_data+i+2,name[rand()%7],18);
  count_num++ ;
 } 
 }
}

//输出样本库信息 
void Put_Simple_Data(char *_data)
{
 int offset_start = 0 , count = 0 , end_position = 0 ;
 int end_position_save = 0 ;
 int count_number = 0 ;
 count_number = 0 ;
 for(offset_start = 0 , count = 0 ; \
 offset_start < 600 ;  \
 offset_start++ ,count++) \
 {
  //每20个字节为单位
  if(count == 20)
  { 
  //1.记录起始地址
  end_position = offset_start ;
  //2.以20个字节作为分割点，分割数据 
  sample_data_info[count_number].serial_num = _data[end_position-20] ;  //20*n+0为库的编号
  sample_data_info[count_number].property  = _data[end_position-19] ;  //20*n+1为库的属性
  memset(sample_data_info[count_number].sample_name,0,18);    
  memcpy(sample_data_info[count_number].sample_name,(_data+2)+(20*count_number),18); //20*n+2....20*n+2+18为库的名称 
  printf("编号:%d  属性:%d  名称:%s\n",sample_data_info[count_number].serial_num,sample_data_info[count_number].property,sample_data_info[count_number].sample_name);
  //记录有多少个20
  count_number++ ;
  //将当前的计数清0 
  count = 0 ;  
  }
 }
}

int main (void) 
{
 char *_data = NULL ;
 _data = malloc(600);
 Create_Simple_Data(_data);
 Put_Simple_Data(_data);
 free(_data);
 _data = NULL ;
  return 0;
}