c函数创建文件和路径

bool NewFileName(const char* filename)

{

    size_t len;

    if ( < (len = strlen(filename)))

    {

        char* tmpbuf, *p, c;

        tmpbuf = (char*)malloc(len + );

        strcpy_s(tmpbuf, len + , filename);

        for (p = tmpbuf; *p; ++p)

        {

            if ('\\' != *p && '/' != *p)

            {

                continue;

            }

            c = *++p;

            *p = '\0';

            if ((_access(tmpbuf, )) != )

            {

                if ( != _mkdir(tmpbuf))

                {

                    break;

                }

            }

            *p = c;

        }

        {

            FILE* file;

            free(tmpbuf);

            if ( == _tfopen_s(&file, filename, _T("a")))

            {

                fclose(file);

                return true;

            }

        }

    }

    return false;

}