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  • NTP 文件的存储 C IP 地址

    #include <stdio.h>
    #include <string.h>
    #define NTP_TIME "/etc/ambaipcam/IPC_Q313/config/NTPaddr.txt"

    int main()
    {
    FILE *NTPfp ;
    char szNTP[50][255],ntpjudge[100];
    char addr[255],addrbuf[255];
    char NTPaddress[255]; //-------------要改的NTP地址
    strcpy(NTPaddress,"192.168.1.139");
    int i,Lid=-1;
    int judge;
    memset(szNTP,0,sizeof(szNTP));
    strcpy(ntpjudge,"1");

    if((NTPfp=fopen(NTP_TIME,"r"))==NULL)
    {
    printf("can not open file!\n");
    }
    while(fgets(addr,256,NTPfp))
    {
    Lid++;
    memset(addrbuf,0,sizeof(addrbuf));
    if(strstr(addr,"NTP")!=NULL) //判断NTP是否打开
    {
    snprintf(addrbuf,sizeof(addrbuf)," NTP=%s\n",ntpjudge);
    strcpy(szNTP[Lid],addrbuf);
    }
    else if(strstr(addr,"address")!=NULL) //判断文件中哪一行是address
    {
    snprintf(addrbuf,sizeof(addrbuf)," address=%s\n",NTPaddress);
    strcpy(szNTP[Lid],addrbuf);
    }
    else
    strcpy(szNTP[Lid],addr);
    }
    fclose(NTPfp);

    if((NTPfp=fopen(NTP_TIME,"w"))==NULL) //写入NTPaddr.txt
    {
    printf("can not open file!\n");
    return;
    }
    else
    {
    for(i=0;i<=Lid;i++)
    {
    fputs(szNTP[i],NTPfp);
    }
    fclose(NTPfp);
    }
    printf("ntpend=%s\n",szNTP[0]);
    printf("address=%s\n",szNTP[1]);
    }
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  • 原文地址:https://www.cnblogs.com/qingjoin/p/2411468.html
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