下面的循环语句中,不可以采用来求1到100的和.A．Sum=0B．Sum=0ForI=1To100ForI=100To1Step-1Sum=Sum+ISum=Sum+INextINextIC．I=1D．I=1DoDoUntilI>100Sum=Sum+II=I+1I=I+1Sum=Sum+

Question

下面的循环语句中,不可以采用 来求1到100的和.
A．Sum = 0 B．Sum = 0
For I = 1 To 100 For I = 100 To 1 Step -1
Sum = Sum + I Sum = Sum + I
Next I Next I
C．I = 1 D．I = 1
Do Do Until I > 100
Sum = Sum + I I = I + 1
I = I + 1 Sum = Sum + I
Loop While I

Answer 1

选择D
答案D的话当I=100的时候还可以运行,但是运行的结果是I+1也就是说最后一次加了一个101所以结果肯定是不正确的!