c String類的運算子過載 21

一，建立測試程式包

測試**如下：

/*

date: 2017-5-4
* description: string operator overload test program
* filename: string_operator.h
* author: myron zhou */
#ifndef __string_operator_h_
#define __string_operator_h_  #include 
#include 
using
namespace
std;  
class
mystring  
;#endif

/*

date: 2017-5-4
* description: string operator overload test program
* filename: string_operator.cpp
* author: myron zhou */
#include 
"string_operator.h
"using
namespace
std; 
//預設建構函式，初始化為空串    
mystring::mystring()  
//建構函式，用乙個字串初始化    
mystring::mystring(const
char*str)  
//拷貝建構函式，用另外乙個string初始化    
mystring::mystring(const mystring&str)  
//析構函式    
mystring::~mystring()  
//過載賦值操作符( = )    
mystring& mystring::operator = (const mystring&str)  
delete p;  
len =str.len;  
p = new
char[len + 1
];  
strncpy(p,  str.p, len + 1
);  
return *this
;  }  
//過載輸出操作符( << )    
ostream& operator
<< (ostream& out, const mystring&str)  
//過載輸入操作符( >> )    
istream& operator >> (istream& in, mystring&str)  
//過載加號操作符( + )    
mystring operator + (const mystring& str1, const mystring&str2)  
//過載相加賦值操作符( += )    
mystring operator += (mystring& str1, const mystring&str2)  
//過載相等操作符    
bool
operator == (const mystring& str1, const mystring&str2)  
return
false
;  }  
//過載不相等操作符    
bool
operator != (const mystring& str1, const mystring&str2)  
return
true
;  }  
//過載下標（）  
char&  mystring::operator(int
index)  

/*

date: 2017-5-4
* description: string operator overload test program
* filename: main.cpp
* author: myron zhou */
#include 
"string_operator.h
"int
main()  

運算子過載（實現CString類）

private char m pdate public 建構函式 cstring cstring 拷貝構造 cstring cstring const cstring t cstring if m pdate null deletem pdate m pdate new char strlen t ...

C String類中的運算子過載

模組化設計 標頭檔案 ifndef operator operator h define operator operator h include include using namespace std class mystring endif 功能函式 include operator.h 預設建構...

c String字串類的運算子過載

在c 中有乙個新定義的型別string，可以不用那麼麻煩的操作字串，並且一些高階的運算子過載讓她的使用更加便捷 下面是string類的定義和成員函式的定義 ifndef operator operator h define operator operator h include includeusi...