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3. Why do we use iostream and namespace in C++ Programming (Hindi) Video Lecture | Learn to Program with C++: Beginner to Expert (in Hindi) - Back-End Programming
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| 1. iostream और namespace का C Programming में उपयोग क्यों किया जाता है? |  |
| 2. iostream और namespace क्या हैं? | |
Ans. iostream और namespace निम्नलिखित हैं:
- iostream: iostream एक स्टैंडर्ड C++ किताब है जिसका उपयोग Input/Output सुविधाओं को प्रदान करने के लिए किया जाता है। इस किताब में स्ट्रीम्स, फंक्शन्स, और विभिन्न फाइल ऑपरेशन्स शामिल होते हैं।
- namespace: namespace एक कंटेनर होता है जो विभिन्न इंटरनल और एक्सटरनल नामों को संग्रहीत करता है। यह नाम विस्तारितता को प्रबंधित करने में मदद करता है और नाम की दुप्लिकेशन को रोकता है।
| 3. iostream कितने प्रकार के होते हैं? | |
Ans. iostream के निम्नलिखित प्रकार होते हैं:
- istream: यह स्ट्रीम, इनपुट से डेटा पढ़ने के लिए उपयोग होता है।
- ostream: यह स्ट्रीम, आउटपुट पर डेटा लिखने के लिए उपयोग होता है।
- iostream: यह स्ट्रीम, इनपुट और आउटपुट दोनों के लिए उपयोग होता है।
| 4. namespace की आवश्यकता क्यों होती है? | |
Ans. namespace की आवश्यकता निम्नलिखित कारणों के लिए होती है:
- नाम की दुप्लिकेशन को रोकने के लिए।
- विभिन्न नामों को विभाजित करने के लिए और उन्हें क्लास, फंक्शन या वेरिएबल के साथ जोड़ने के लिए।
- विभिन्न नाम स्पेस में नामों को व्यवस्थित करने के लिए।
| 5. iostream और namespace को कैसे इम्पोर्ट किया जाता है? | |
Ans. iostream को इम्पोर्ट करने के लिए, हम `#include <iostream>` उपयोग करते हैं। इसके बाद हम iostream के सभी सुविधाओं का उपयोग कर सकते हैं।
namespace को इम्पोर्ट करने के लिए, हम `using namespace <namespace_name>` उपयोग करते हैं। इससे हम उस namespace के अंदर बने हर एलिमेंट का उपयोग कर सकते हैं।
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