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void StringCopy(char *strDestination, const char *strSource);

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2 .ÓÃconst ÐÞÊκ¯ÊýµÄ·µ»ØÖµ
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const char * GetString(void);
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char *str = GetString();
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const char *str = GetString();
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Èç¹û·µ»ØÖµ²»ÊÇÄÚ²¿Êý¾ÝÀàÐÍ£¬½«º¯ÊýA GetA(void) ¸ÄдΪconst A & GetA(void)µÄÈ·ÄÜÌá¸ßЧÂÊ¡£µ«´ËʱǧÍòǧÍòҪСÐÄ£¬Ò»¶¨Òª¸ãÇå³þº¯Êý¾¿¾¹ÊÇÏë·µ»ØÒ»¸ö¶ÔÏóµÄ¡°¿½±´¡±»¹Êǽö·µ»Ø¡°±ðÃû¡±¾Í¿ÉÒÔÁË£¬·ñÔò³ÌÐò»á³ö´í¡£
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class A
{
A & operate = (const A & other); // ¸³Öµº¯Êý
} ;
A a, b, c; // a, b, c ΪA µÄ¶ÔÏó

a = b = c; // Õý³£µÄÁ´Ê½¸³Öµ
(a = b) = c; // ²»Õý³£µÄÁ´Ê½¸³Öµ£¬µ«ºÏ·¨
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class Stack
{
public:
void Push(int elem);
int Pop(void);
int GetCount(void) const; // const ³ÉÔ±º¯Êý
private:
int m_num;
int m_data[100];
} ;
int Stack::GetCount(void) const
{
++ m_num; // ±àÒë´íÎ󣬯óͼÐÞ¸ÄÊý¾Ý³ÉÔ±m_num
Pop(); // ±àÒë´íÎ󣬯óͼµ÷Ó÷Çconst º¯Êý
return m_num;
}
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