assembly - C code snippets explanation -

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i'm trying convert following c code snippets assembly, problem can't understand these simple c code. written in abnormal way think. can't transfer assembly. please me 

a = (a >= c); b = (c < d) || (b > d); = (a != d) && (b != c)

look if a>=c return true. a=1 otherwise a=0. in second case if c<d(c less d ) or b>d(b greater d) 1 of them true b=1. if both false b=0. if not equal d , b not equal c a=1 otherwise false(0).

       && b = 1  if a!=0 , b!=0               = 0  if a=0 or b=0 or (a=0 , b=0) 
      || b = 1 if a!=0 or b!=0              = 0 if a=0 , b=0

note: if (a && b) , found 0 b not checked. if (a || b) , found 1 b not checked.

if b expression not executed per information stated above. called short circuit evaluation.


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