c++ - Trouble with objects and Pointers -

- 

  वेक्टर & lt; आकृति * & gt; आकार; शून्य बनावट () ​​(छवि = QImage (चौड़ाई, ऊंचाई, 32); // 32 बिट रंग amb (0.1,0.1,0.1); रंग difcoef (0.75,0.6,0.22); रंगीन नमूना (0.50.5,0.5); डबल चमक = 3.0; क्षेत्र * s = नया क्षेत्र (प्वाइंट (0.0.0.0, -5), 100.0, एबीबी, डिफिकेफ, कल्पना, चमक); shapes.push_back (रों); } Int main () {// इनिशियलाइट ग्लुत इनिट (); createScene (); आकार * x = आकार [0]; Cout & lt; & lt; एक्स- & gt; चमक और एलटी; & lt; endl; } वर्ग आकार {सार्वजनिक: आकार () {} ~ आकार () {} रंग परिवेश; रंग अलग; रंग युक्ति; डबल चमक; वर्चुअल बूल चेक इंटरसेक्ट (प्वाइंट पी, प्वाइंट डी, पॉइंट एंड टेम्पप) = 0; // यदि प्रतिच्छेदन करता है, तो सत्य और झूठी सत्य वापस आएँ। आभासी बिंदु getNormal (बिंदु intPt) = 0; // प्रतिच्छेदन बिंदु पर सामान्य प्राप्त करें / आभासी शून्य प्रिंटस्टाफ () = 0; };

जब वह चमक से बाहर प्रिंट करता है, तो मुझे शून्य का मान मिलता है? ऐसा क्यों है?

मुझे लगता है कि घटनाएं (क्योंकि आप एक आकृति वस्तु का उपयोग कर रहे हैं और उसे बताए हुए हैं) । बहुरूपता को संरक्षित करने के लिए आप क्या करना चाहते हैं, एक सूचक या संदर्भ का उपयोग करें। इस मामले में मैं एक सूचक का उपयोग करेगा: 

  आकृति * x = आकार [0];

अगर आकार एक अजीब कंटेनर होता है जो डी-संदर्भ करता है (यह वह है जो मैं आपके कोड से समझता हूं) तो मैं संदर्भ का उपयोग करूँगा: 

  आकार & Amp; एक्स = आकार [0];

आप एक कॉन्फेंट संदर्भ का उपयोग कर सकते हैं, लेकिन यह आपके लिए अनिवार्य नहीं है क्योंकि आपकी ऑब्जेक्ट किसी भी तरह से अस्थायी रूप से नहीं है।

बीटीडब्ल्यू, किसी ने आपको नहीं बताया है ग्लोबल्स एक खराब अभ्यास हैं?


Comments

Post a Comment

Popular posts from this blog

c# - How to capture HTTP packet with SharpPcap -

-
I would like to capture all incoming HTTP packets on my machine. To do this, I am using SharpPcap which is a WinPcap The cover is. SharpPcap works very well, but it captures TCP packets and what it wants to do for me is a very low level. Does anyone know how can I easily get full HTTP requests / reactions from all these TCP packets? Thanks SharpPcap is already able to capture the packet in the same way That's what the virus does (just in the code instead of the GUI). And you can either either parse them directly or you can put them in the drive in the common .pcap file format. The steps to parse the capture are: Open a connection at any time Loop a while Or start capturing using an event callback Parsing the raw packet for the type you want If you are reading .PPP dump files In addition to calling you an offline capture reader is almost the same, there is no need to select an interface, and you can set the majority There is no need to do the modes. All st...
Read more

Is there an open source WebSockets (JavaScript) XMPP library? -

-
Has anyone written the open source XMPP library that uses the websacet and is being run by a browser? We do not yet have a standard XMPP that can enforce the server, Must be adequately faced before it may be necessary The first step is to eliminate WebSAT standardization. It seems that it can be in an IETF Haib working group, which has not been approved by the IESG so far in the writing time (see) a few weeks ago (Hiroshima), a hybrid bird-of-a-feather in IETF ( BOF), which went very well. WebSketches have a constant reference, and it seems to be systematically organized, one will make XMPP binding for webmasters, possibly with a bar for every webset frame. Edit: Jack Moffitt has written an IETF can be used with the first pass on a protocol. Warning . It is still likely to change fast enough, only apply it if you are ready to wrap it completely later. Warning
Read more

php - Multiple Select with Explode: only returns the word "Array" -

-
By using Wordpress I have created a multiple selection box so that users can select categories to exclude. When the page is initially loaded, I see my predefined default option. However, when I select a new value and I save ... I only see the word "Array" and have not chosen anything else? & lt; Class = "amultiple" id = "& lt; php echo $ value ['id'] ;? gt;" name = "& gt; php echo $ value ['id'] ;; gt; []" Multiple = "multiple" size = "8" & gt; & Lt ;? Php global option; Foreign currency ($ value as value $) {if (get_settings ($ value ['id']) === FALSE {$$ value ['id'] = $ value ['std']; } And {$$ value ['id'] = get_settings ($ value ['id']); }} $ Ranges = & amp; Amp; Categories ('type = post & orderbiz = name & amp; hide_empty = 1'); If ($ ranges) {$ ex_cat = implode (',', $ tt_cat_exclude); Forex Currency ($ range a...
Read more