1 #include<iostream>
2 using namespace std;
3 double calculate(double x ,double y ,double (*pf[3])(double,double));
4 double add(double x ,double y);
5 double att(double x ,double y);
6 double app(double x ,double y);
7 int main()
8 {
9 double (*ps[3])(double,double)={add,att,app};
10 double a ,b;
11 cout<<"Enter a X : "<<endl;
12 cin>>a;
13 cout<<"Enter a Y : "<<endl;
14 cin>>b;
15 double tal = 0.0;
16 for(int i=0;i<3;i++)
17 {//calculate(a,b,(double(**)(double,double)));
18 //需要注意这里
19 tal = calculate(a,b,(double(**)(double,double))(ps+i));
20 cout<<tal<<endl;
21 }
22 return 0;
23 }
24
25 double calculate(double x ,double y ,double (*pf[3])(double,double))
26 {
27 double temp = 0.0;
28 temp = (*pf)(x,y);
29 return temp;
30 }
31
32 double add(double x ,double y)
33 {
34 return x+y;
35 }
36
37 double att(double x ,double y)
38 {
39 return x*y;
40 }
41
42 double app(double x ,double y)
43 {
44 return x/y;
45 }
