C++笔记（3）类中与类外的运算符重载.
重载>> 1
#include <iostream>
2using namespace std;
3
4//类内重载
5class string_A
6
{
7
public:
8 void operator >> (istream & input)
9
{
10
11
};
12
};
13
14void main()
15{
16 string_A string_a;
17 //cin>>string_a; //Fail!!
18 string_a>>cin;
19}
20
21//类外重载
22class string_B
23{
24 public:
25
26};
27
28void operator >> (istream & input, string_B &output)
29{
30
31};
32
33void Test()
34{
35 string_B string_b;
36 cin>>string_b;
37 //string_b>>cin; //Fail
38}
#include <iostream>2
using namespace std;3
4
//类内重载5
class string_A6
{
7
public:8
void operator >> (istream & input)9
{
10
11
};12
};13
14
void main()15
{16
string_A string_a;17
//cin>>string_a; //Fail!!18
string_a>>cin;19
}20
21
//类外重载22
class string_B23
{24
public:25
26
};27
28
void operator >> (istream & input, string_B &output)29
{30
31
};32
33
void Test()34
{35
string_B string_b;36
cin>>string_b;37
//string_b>>cin; //Fail38
}