Assign and compare in single statement in c -

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मैं निम्न कोड को एक पंक्ति में कैसे रूपांतरित कर सकता हूँ? 

  int * i; मैं = some_func_ret_int_ptr (); यदि (! I) {// कुछ करना} // मैं बाद में उपयोग करेंगे   
 मुझे कुछ करना चाहिए  
  अगर ((i = some_func_ret_int_ptr ) & amp; i! i) {// कुछ करना} // मैं बाद में उपयोग करेगा   
 लेकिन मैं यहाँ एक तुलना बर्बाद कर रहा हूँ। मैं इसे करने के लिए एक बेहतर तरीका है? मैं चाहता हूं कि सभी काम करना और तुलना करना है और तुलना करें। I।   
 
 
 इसके अलावा सुझाव दिया गया है कि अन्य उत्तरों में आप इसे  
  के रूप में भी कर सकते हैं यदि (i = some_func_ret_int_ptr (),! I) {// कुछ करना}   
 यह एक है ,  ऑपरेटर द्वारा अलग-अलग अभिव्यक्ति अनुक्रम से बदल दिया गया है।  
 यह हालांकि ज्यादा व्यावहारिक नहीं है।

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