# include & lt; Iostream> 
# include & lt; Set> 
# include & lt; String> 
using namespace std; 
//custom data sorting 
The class Person {
Public: 
The Person (string name, int age) {
This - & gt; M_Name=name; 
This - & gt; M_Age=age; 
} 

Const string getName () {return this - & gt; M_Name; } 
Const int getAge () {return this - & gt; M_Age; } 

Private: 
String m_Name; 
Int m_Age; 
}; 

Void test04 () {
Set SPerson; 
The Person p1 (" liu ", 35); 
The Person p2 (" cao ", 45); 
The Person p3 (" sun quan ", 40); 
The Person p4 (" zhaoyun, 25); 
The Person p5 (" zhang fei ", 35); 
The Person p6 (" guan yu ", 35); 
SPerson. Insert (p1); 
SPerson. Insert (p2); 
SPerson. Insert (p3); 
SPerson. Insert (p4); 
SPerson. Insert (p5); 
SPerson. Insert (p6); 
For (set : : const_iterator it=sPerson. The begin (); It!=sPerson. End (); 
It++) 
Cout & lt; } 

Int main () {
Test04 (); 
return 0; 
} 

The above code compiled through, can you tell me where the problem is, thank you.

CodePudding user response:

In the set in a custom type Person, can be overloaded in the Person & lt; The operator
as follows[code=c + +]
The class Person {
Public:
The Person (string name, int age) {
This - & gt; M_Name=name;
This - & gt; M_Age=age;
}

Const string getName () {return this - & gt; M_Name; }
Const int getAge () {return this - & gt; M_Age; }
Boolean operator & lt; (const Person& B) const {
Return this - & gt; GetName () & lt; B.g etName ();
}
Private:
String m_Name;
Int m_Age;
};
[/code]

CodePudding user response:

To give the Person to define & lt; Operators within the set with & lt; The sorting