#include <iostream>
#include <string>
#include <stdlib.h>
#include <cstring>
using namespace std;
class String
{
public:
String(){p = NULL;}
String(char *str){p = str;}
friend bool operator>(String &string1,String &string2);
friend bool operator<(String &string1,String &string2);
friend bool operator==(String &string1,String &string2);
void display();
private:
char *p;
};
bool operator>(String &string1,String &string2)
{
if(strcmp(string1.p,string2.p)>0)
return true;
else
return false;
}
bool operator<(String &string1,String &string2)
{
if(strcmp(string2.p,string1.p) > 0)
return true;
else
return false;
}
bool operator==(String &string1,String &string2)
{
if(strcmp(string1.p,string2.p) == 0)
return true;
else
return false;
}
void String::display()
{
cout << p;
}
void compare(String &string1,String &string2)
{
if(string1 > string2)
{
string1.display();
cout << ">" ;
string2.display();
}
if(string1 < string2)
{
string1.display();
cout << "<" ;
string2.display();
}
if(string1 == string2)
{
string2.display();
cout << "==" ;
string2.display();
}
}
int main(int argc, char *argv[])
{
cout << "Hello World!" << endl;
String string1("hello"),string2("book"),string3("hello");
compare(string1,string2);
compare(string2,string1);
compare(string1,string3);
return 0;
}
简小的C++基础--重载运算符2
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转载自blog.csdn.net/bootleader/article/details/72614914
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