c - What is (void)(p) doing here? -

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इस सवाल का पहले से ही एक उत्तर है: < / P>

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    मैं कोड की जांच कर रहा था और मुझे निम्नलिखित स्निपेट पर आया था: 

      int check (char * a) {(शून्य) (ए); // यह लाइन क्या कर रही है ?? वापसी 0; } Int main (शून्य) {char * p; पी = (चार *) मॉलोक (आकारफ (चार)); (पी) की जांच; वापसी 0; }   
      (शून्य) (ए);  क्या कर रहा है?   
     
     
     फ़ंक्शन में किसी फ़ंक्शन पैरामीटर का उपयोग नहीं किया गया है तो कुछ संकलक चेतावनी दे सकता है,  (शून्य) एक  ऐसी चेतावनियां चुप्पी कर सकता है।  
     एक और यह प्राप्त करने के लिए आम तरीका है:  
      int चेक (char * a) {a = a; वापसी 0; }

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