Question

VB中 逻辑表达式 怎么表示

Answer 1

1:X+Y小于10
且
X-Y要大于0
----------------------------
X+Y<10
and
X-Y>0
2:X.Y都是正整数或都是负整数
--------------------------
int(X)=X
and
int(Y)=y
and
(sng(X)=sng(Y))
3:A.B之一为零但不得同时为零
--------------------------
(A=0
or
B=0)and
A<>B
4:C1+C2+C3大于等于255或C1与C2分别大于90且C3大于80
----
C1+C2+C3>=255
or
((C1>90
or
C2>90)
and
C3>80)