c++ - Using `getline(cin, s);` after using `cin >> n;` -

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<पूर्व> int n; Std :: cin & gt; & gt; n; Std :: string s = ""; Std :: getline (cin, s);

मैंने देखा है कि अगर मैं cin का उपयोग करता हूं, तो मेरा प्रोग्राम अगली बार लटका होगा जब मैं लाइन मिलती है (पिन, श्रेणी इनपुट) ।

चूंकि getline () का उपयोग कर रहा है cin , यही वजह है कि अगर यह प्रोग्राम पहले से इस्तेमाल किया हुआ है, तो उसे क्यों लटकाया जा रहा है cin < / code>? अगर मुझे cin ?

आपको इनपुट स्ट्रीम साफ़ करने की आवश्यकता है - अपनी कॉइन के बाद निम्नलिखित को जोड़ने का प्रयास करें: 

  cin.clear (); Cin.ignore (std :: numeric_limits & lt; std :: streamsize & gt; :: max (), '\ n');

प्रश्न का स्वीकृत जवाब यह बताता है कि क्यों / जब यह आवश्यक है।


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