通过FILE简单C++写日志到本地文件

void WriteLog(char * szLog, int nError)
{
    SYSTEMTIME st;
    GetLocalTime(&st);
    FILE *fp;
    fp = fopen("D:\\log.txt", "at");
    fprintf(fp, "MyLogInfo: %d:%d:%d:%d, The Err Num is %d ", st.wHour, st.wMinute, st.wSecond, st.wMilliseconds, nError);
    fprintf(fp, szLog);
    fclose(fp);
    OutputDebugStringA(szLog);
}