A.if語句 B.switch語句 C.dowhile語句 D.for語句
A.double B.char C.byte D.short
A.intc=a;a=b;b=c; B.a=a+b;?b=a-b;?a=a-b; C.intc=b;b=a;a=c; D.a=b;?b=a;