[单选题]

(程序)

SET TAIK OFF

STORE 0 TO M,N

D.O WHILE M<30

N=N+3

M=M+N

E.NDDO

? M,N

SET TALK ON

PETURN

M的输出结果为 ______。

A.30

B.45

C.18

D.9

参考答案与解析:

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