程序中写个日志

代码
1、

FILE *fp = fopen("C:\\1.txt","a+");
char strBuf[512];

sprintf(strBuf,"%s\r\n","log");
fwrite(strBuf,1,strlen(strBuf),fp);

fclose(fp);

2、

  // 写日志功能
void WriteLog(LogInfoType iLogType ,char *pLog)
{
        //环境变量的判断

        char *strENV;
        strENV = ::getenv( "GeoGlobeENVLOG" ); 
        if( strENV == NULL ) return; 
        if( strcmp(strENV ,"OPEN") != 0) return;

        FILE* fp = NULL; 
        char strLogPath[MAX_PATH] = {0};
        memset(strLogPath,0,MAX_PATH);
        sprintf(strLogPath,("c:\\dataset.log"));
        fp = fopen(strLogPath, "a");
        if(fp == NULL)
        {
              fp= fopen(strLogPath,"w");
        }

        int iLen = 0;
        char strInfo[3072]={0}; 
        memset(strInfo,0,3072);
       GetNowString(strInfo,&iLen, 3072);
        strcat(strInfo,_T(" : "));
        if(fp)
        {
                 GetLogFormat( iLogType ,strInfo , 0);
                 strcat(strInfo, pLog);
                 GetLogFormat( iLogType ,strInfo , 1);  
                 fwrite(strInfo, 1, strlen(strInfo), fp);
                 fclose(fp);
         }

}