单选题

若有定义语句:char*s1="OK",*s2="ok";以下选项中,能够输出"OK"的语句是(    )

A

if (strcmp (s1, s2)!=0) puts ( s1);

B

if (strcmp (s1, s2)!=0) puts (s2);

C

if (strcmp (s1, s2) == 1) puts (s1);

D

if (strcmp (s1, s2) )==0) puts(s1);

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