vc++读写配置文件

void checkConfig(){

  char *AppName = "TS37";
  char *ConfigFile = "./config.ini";
  char *ItemName = "StationNum";
  char *defValue = "0";
  const int bufSize  = 10;
  char buf[bufSize];

  GetPrivateProfileString(AppName,ItemName,defValue,buf, bufSize, ConfigFile);
  if(!strcmp(buf,"0")){
    WritePrivateProfileString(AppName,ItemName,"23","./config.ini");
    stationNum = 23;
  }else{
    stationNum = atoi(buf);
  }
}