math - Factoring Polynomial exercise in ruby, unexpected syntax? -

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मुझे ये त्रुटियां मिली हैं - 

  (eval): 30: (eval): 30: 8:: सिंटैक्स त्रुटि, अप्रत्याशित KDO   
 - जब मैं कंसोल में इस गहरे लाल रंग का कोड भाग गया -  
 <कोड त्रुटि (सिंटैक्स त्रुटि) (eval) संकलन > वर्ग फैक्टर डालता कुल्हाड़ी ^ 2 + bx + सी \ "" apos = PosOrNeg? ( 'ए') # परीक्षण apos डीईएफ़ PosOrNeg डालता है? (स्ट्रिंग = "रिक्त" इस कार्यक्रम के \ के रूप में एक बहुपद कारक होगा "" ) करता है "हमें बताएं कि \" # {string} \ "सकारात्मक या नकारात्मक है। \" Pos \ "या \" neg \ "टाइप करें।" posOrNegStr = gets.chomp मामले posOrNegStr जब "स्थिति" स्थिति = सच है जब aPosOrNegStr = false स्थिति = किसी और झूठी जबकि posOrNegStr = "स्थिति" & amp;! & amp; PosOrNegStr! = "Neg" डालता है "अमान्य इनपुट। कृपया \" pos \ "या \" neg \ "टाइप करें।" posOrNegStr = gets.chomp मामले posOrNegStr जब "स्थिति" स्थिति = सच है जब aPosOrNegStr = false स्थिति = false किसी और अंत अंत अंत अंत अंत   
 विचार?   
 
 
 पंक्तियों को देखो:  
  # परीक्षा एक पोस्ट डीओईएस पाओसओओआरएनजीग (स्ट्रिंग = "रिक्त") करता है # और लेफ्टिनेंट ;- यहाँ!!   
 रूबी में एक विधि को परिभाषित करने के लिए यहां एक आदर्श वाक्यविन्यास है:  
  def method_name # method body end   
 ,  डीईएफ़ पोसऑननेग (स्ट्रिंग = "रिक्त") को बदलें  को  def पोसओरनेग? (स्ट्रिंग = "रिक्त") ।  
 नोट: रूबी में एक विधि या किसी वस्तु को परिभाषित करने के लिए कोडिंग शैली  snake_cased  है, जो रूबी समुदाय के बीच बहुत प्रसिद्ध है यदि आप अपनी पद्धति को कुछ पसंद करते हैं तो यह बहुत बेहतर होगा:  pos_or_neg? (स्ट्रिंग = 'रिक्त') ।

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