A、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px; TEXT-DECORATION: none">{;}</span>
B、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px; TEXT-DECORATION: none">a=0,b=0,c=0;</span>
C、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px; TEXT-DECORATION: none">if(a>0);</span>
D、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px">if(b==0) m=1;n=2;</span>
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