strtok和strtok_r用法

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1. #include <stdio.h>  
2. #include <stdlib.h>  
3. #include <string.h>  
4.   
5. int main()  
6. {  
7.     char str[]="ab,cd,ef";  
8.     char *ptr;  
9.     printf("before strtok:  str=%s\n",str);  
10.     printf("begin:\n");  
11.     ptr = strtok(str, ",");  
12.     while(ptr != NULL){  
13.         printf("str=%s\n",str);  
14.         printf("ptr=%s\n",ptr);  
15.         ptr = strtok(NULL, ",");  
16.     }  
17.     system("pause");  
18.     return 0;  
19. }  

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


struct IPAddr{


unsigned char ip[4];
unsigned short port;
};


typedef struct IPAddr IP;


int ParserIP(const char*ip_str, struct IPAddr* aIPAddr)
{
char *result = NULL;
char *reip = NULL;
char *ip_array[10];
int i = 0, j = 0;


result = strtok(ip_str, ":");

while (result!=NULL)
{
ip_array[i] = result;
result = strtok(NULL, ":");
i++;
}


reip  = strtok(ip_array[0], ".");

while (reip!=NULL)
{
aIPAddr->ip[j] = (unsigned char)atoi(reip);
reip = strtok(NULL, ".");
j++;
}


aIPAddr->port = (unsigned short)atoi(ip_array[1]); 
return 0;
}


int main(void)
{
char str[] = "103.22.11.15:22";
IP ip_addr;


ParserIP(str, &ip_addr);

int i;
for (i=0; i<4; i++)
{ 
printf("ip_addr.ip[%d] = %d\n", i, ip_addr.ip[i]);
}
printf("ip_addr.port = %d\n", ip_addr.port);


return 0;
}