c语言根据协议分割字符串 C语言根据协议分割获取字符串单元的实现代码

00001 00007 1 3  34567 26358 32698  
 (1)  (2) (3)(4) (5)  (6)  (7)

(1)00001就是数字1，即代表序列号为1
(2)00007就是数字7，即代表长度为7
(3)1代表状态字
(4)3代表数字长度
(5)34567代表数据1
(6)26358代表数据2
(7)32698代表数据3

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//根据空格拆分字符串 
int partition(char *src, char *par, int pos)
{
 int i,j;
 i = pos;
 //取得一个非空字符 
 while(src[i] == ' ')
  ++i;
 if(src[i] != '\0')
 {
  j = 0;
  while((src[i] != '\0') && (src[i] != ' '))
  {
   //判断条件是否满足 
 if((src[i] > '9') || (src[i] < '0') && (src[i] != '-'))
  return -1 ;
   par[j] = src[i];
   ++i;
   ++j;
  }
  par[j]='\0';
  return i;
 }
 else
  return -1;
}
int main(void)
{
 int serial_number ;
 int lenght ;
 int status ;
 int data_length;
 int data1,data2,data3; 
 int position = 0;
 int para_flag = 1 ; 
 int parameter_item = 0;
 char partition_string[20] = {0};
 char *data = "00001 00007 1 3 34567 26358 32698"; 
 while(para_flag)
 {
 if(para_flag == 0)
  break ; 
 if((position = partition(data,partition_string,position)) != -1)
 {
  ++parameter_item ;
  switch(parameter_item)
  {
  case 1:
   serial_number = atoi(partition_string);
   break ;
  case 2:
   lenght = atoi(partition_string);
   break ;
  case 3:
   status = atoi(partition_string); 
   break ;
  case 4:
   data_length = atoi(partition_string); 
   break ;
  case 5:
   data1 = atoi(partition_string); 
   break ;
  case 6:
   data2 = atoi(partition_string); 
   break ;
  case 7: 
   data3 = atoi(partition_string); 
   para_flag = 0 ;
   break ;
  }
 }
 }
 printf("序号:%d\n",serial_number);
 printf("长度:%d\n",lenght);
 printf("状态字:%d\n",status);
 printf("数据长度:%d\n",data_length);
 printf("数据1:%d\n",data1);
 printf("数据2:%d\n",data2);
 printf("数据3:%d\n",data3);
 return 0; 
}