Update README.md
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		@@ -1,8 +1,7 @@
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# 引用与指针那些事
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# Reference and Pointer
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## 关于作者:
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## About Author:
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:
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@@ -149,7 +148,7 @@ Let's write out the reference C + + code segment test2 for parameter passing:
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```c++
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void test2(int& r)
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{
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    r = 3;    //赋值前无需判断reference是否为空
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    r = 3;    // do not need to judge whether reference is null.
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    return;
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}
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```
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