AVR PINx.n not working -

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मेरे पास folloving कोड है: 

  #define F_CPU 8000000UL #include & lt; avr / io.h & gt; # शामिल करें & lt; util / delay.h & gt; Int मुख्य (शून्य) {DDRB = 0xFF; // B आउटपुट डीडीआरडी = 0x00; // डी इनपुट PORTB = 0x00; // एलईडी बंद PORTD = 0xFF; // पुल-अप सक्रिय करते हुए (1) {if (PIND.4 == 0) {PORTB & amp; = ~ (1 & lt; & lt; पीबी0); / * * / _delay_ms (100) पर एलईडी; PORTB | = 1 & lt; & lt; PB0; / * एलईडी बंद * / _delay_ms (100); }} वापसी 0; }

हालांकि, जब इसे Atmel स्टूडियो में बनाने की कोशिश करते हैं तो यह एक त्रुटि देता है: 

  त्रुटि 1 की उम्मीद ')' संख्यात्मक निरंतर से पहले

रेखा संख्या को लाइन से संदर्भित करता है अगर (PIND.4 == 0) { यदि मैं 'PIND' और '4' के बीच बिंदु को हटाता है, लेकिन यह प्रोग्राम जीता काम नहीं कर रहा है क्या मैं गलत कर रहा हूं?

रजिस्टर एक्सेस की PIND.4 शैली आपके विशेष ioXXXX.h फ़ाइल में परिभाषित नहीं किया जा सकता है।

एक आसान प्रतिस्थापन है 

  if (PIND & amp; (1 & lt; & lt; 4) == 0) {

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