A. (c=2)‖(c=4)‖(c=6) B. (c>=2&&c<=6)&&!(c%2) C. (c>=2&&c<=6)&&(c%21=1) D. (c>=2&&c<=6)‖(c!=3)‖(c!=5)
A. a+b=30 B. a+b=10 C. 出错 D. a+b=0