问题 单项选择题

There are two character strings:s and t.s="My favor is computer",t=substr(s,9,5).Then the result after operation is( )。

A.S="My favor is computer";  t="compu";

B.S="My favor is computer";  t="is co";

C.S="My favor";         t="is co";

D. S="My favor";         t="is computer";

答案

参考答案:B

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单项选择题