C++ Primer（第五版）读书笔记 & 习题解答 --- Chapter 2(三)
s Section 2.4.4?
Q_1. Is the following code legal or not? If not, how might you make it legal?
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A_1.?
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int null = 0, *p = null; // 非法，不能用整型变量null来初始化指向整型变量的指针p
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// 修正：
int null = 0, *p = &null;
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