#include <stdio.h>
#include <stdlib.h>
#include <string.h>
char IP_config[100]= "IPv4:192.168.200.245,Mask:255.255.255.245,Gateway:192.168.200.255,DHCP:0,VlanFlag:0,VlanID:0";
char IP_config2[100]= "IPv4:192.168.20.10,Mask:255.255.255.0,Gateway:192.168.20.1,DHCP:0,VlanFlag:0,VlanID:10";
struct tagIP_INFO
{
    /* data */
    char IP[16];
    char Mask[16];
};
typedef struct tagIP_INFO IP_INFO;
typedef struct tagIP_INFO *ptr_IP_INFO;

void getIpConfig(char *str, ptr_IP_INFO pIpInfo){
    //01 get the mask number string
    int i=0,j=0;
    char IPtemp[16];
    str=str+5;
    while(*str!=','){
        IPtemp[i] =*str;
        i++;str++;
    }
    str++;
    IPtemp[i]='\0';
    char ipstr[16]="";
    memcpy(pIpInfo->IP, IPtemp, sizeof(IPtemp));
    printf("ip:%s\t",pIpInfo->IP);

    //02 get the mask number string
    i=0;str=str+5;
    char MaskTemp[16];
    while(*str!=','){
        MaskTemp[i] =*str;
        i++;str++;
    }
    str++;
    MaskTemp[i]='\0';
    memcpy(pIpInfo->Mask, MaskTemp, sizeof(MaskTemp));
    printf("mask:%s\n",pIpInfo->Mask);
}

int main() {
    IP_INFO ipInfo1={0};
    IP_INFO ipInfo2={0};
    ptr_IP_INFO ptrIpInfo1 = &ipInfo1;
    ptr_IP_INFO ptrIpInfo2 = &ipInfo2;
    getIpConfig(IP_config, ptrIpInfo1);
    printf("%s\t%s\n",ptrIpInfo1->IP,ptrIpInfo1->Mask);

    getIpConfig(IP_config2, ptrIpInfo2);
    printf("%s\t%s\n",ptrIpInfo2->IP,ptrIpInfo2->Mask);
    return 0;
}

输出：
ip:192.168.200.245    mask:255.255.255.245
192.168.200.245    255.255.255.245
ip:192.168.20.10    mask:255.255.255.0
192.168.20.10    255.255.255.0

【 在 steven2012 的大作中提到: 】
: 很简单的结构体返回值访问问题；绕不出来，帮忙给看看是什么问题，或者有更好的办法解析字符串也可以，谢谢
: #include <stdio.h>
: #include <string.h>
: ...................
--
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