单项选择题
A.(!a==1&&(!b==0) B.(a<b) &&!c||1 C.a&&b D.a||(b+b) &&(c-a)
A.k=k>=k B.k++ C.k%int(f) D.k>=f>m
A.1/3*sin(1/2)*sin(1/2) B.sin(0.5)*sin(0.5)/3 C.pow(sin(0.5),2)/3 D.1/3.0*pow(sin(1.0.2),2)