【C++】函数模板 不同类型数组的运算

 1 #include <iostream>
 2 
 3 using namespace std;
 4 
 5 template<class T>void index(int n,T num1[]){
 6     for(int i=0;i<n;i++)
 7     {
 8         cout<<"index"<<i<<endl;
 9         cin>>num1[i];
10     };
11         }
12 
13 template <class T>void print1(int n,T num1[]){
14      for(int i=0;i<n;i++)
15     {
16         cout<<i<< " "<<num1[i]<<endl;
17     };
18         }
19 
20 template<class T> void print2(int n,T num1[]){
21      for(int i=0;i<n;i++)
22     {
23         cout<<i<< " "<<num1[i]<<endl;
24     };
25         }
26 
27 template<class T>void rank(int n,T num1[]){
28     T k;
29     for (int i=0;i<n-1;i++)
30     {
31         for(int j=i+1;j<n;j++){
32             if(num1[i]>num1[j])
33             {
34                 k=num1[i];
35                 num1[i]=num1[j];
36                 num1[j]=k;
37 
38                 };
39     }
40                     };
41     }
42 
43 int main()
44 {
45     cout << "Hello world!" << endl;
46     int n;
47     int num1[20];
48     float num2[20];
49     double num3[30];
50     cout<<"total arry"<<endl;
51     cin>>n;
52     index(n,num1);    print1(n,num1);    rank(n,num1);    cout<<endl;    print2(n,num1);
53     index(n,num2);    print1(n,num2);    rank(n,num2);    cout<<endl;    print2(n,num2);
54     index(n,num3);    print1(n,num3);    rank(n,num3);    cout<<endl;    print2(n,num3);
55     return 0;
56 }