新手，想试一下代码，运行出现了错误啊
Configuration:
MATLAB Version: 7.1.0.246 (R14) Service Pack 3
MATLAB License: 161051
Operating System: Microsoft Windows XP
Window System: Version 5.1 (Build 2600: Service Pack 3)
Processor ID: x86 Family 6 Model 14 Stepping 5, GenuineIntel
Virtual Machine:
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