42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
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#ifndef __MYSTRING_H__
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#define __MYSTRING_H__
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#include <iostream>
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#include <cstring>
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// 重载: 实现自定义字符串类
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class MyString
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{
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friend ostream &operator<<(ostream &cout, const MyString &str) {}
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friend istream &operator<<(istream &cout, MyString &str) {}
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public:
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MyString(const char *str); // 有参构造函数
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MyString(const MyString &str); // 拷贝构造函数
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~MyString(); // 析构函数
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public:
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// 字符串拼接
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MyString &operator+(MyString &other); // 重载 + 运算符
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MyString &operator+(const char *other); // 重载 + 运算符
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// 字符串赋值
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MyString &operator=(MyString &other); // 重载 = 运算符
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MyString &operator=(const char *other); // 重载 = 运算符
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// 字符串比较
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MyString &operator==(MyString &other); // 重载 == 运算符
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MyString &operator==(const char *other); // 重载 == 运算符
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// 读取字符串中 index 位置的字符
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char operator[](int index); // 重载 [] 运算符
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private:
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char *mStr; // 字符串
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int mSize; // 字符串长度
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};
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ostream &operator<<(ostream &cout, const MyString &str);
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istream &operator<<(istream &cout, MyString &str);
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#endif
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