C++筆記（3）類中與類外的運算子多載

重載>> 1#include <iostream>
 2using namespace std;
 3
 4//類內重載
 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//類外重載
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}