逻辑操作符的陷阱

 1 #include <iostream>
 2 #include <string>
 3 using namespace std;
 4 class Test
 5 {
 6     int value;
 7 public:
 8     Test(int _value)
 9     {
10         this->value = _value;
11     }
12     ~Test()
13     {
14     }
15     int get_value()
16     {
17         return this->value;
18     }
19 };
20 //重载逻辑与操作符
21 bool operator && (Test op1,Test op2)
22 {
23     return op1.get_value() && op2.get_value();
24 }
25 //重载逻辑或操作符
26 bool operator || (Test op1,Test op2)
27 {
28     return op1.get_value() || op2.get_value();
29 }
30 Test func(Test t)
31 {
32     cout << "Test func(Test t) : Test.value = " << t.get_value() << endl ;
33     
34     return t;
35 }
36 int main()
37 {
38     Test t0(0);
39     Test t1(1);
40 #if 0
41     if (func(t0) && func(t1))
42     {
43        cout << "The result is true" << endl;
44     }
45     else
46     {
47         cout << "The result is false" << endl;
48     }
49 #endif
50     if (operator &&(func(t0),func(t1)))
51     {
52         cout << "The result is true" << endl;
53     }
54     else
55     {
56         cout << "The result is false" << endl;
57     }
58 }