实验6

 1 #include <iostream>
 2 #include "Vector1.hpp"
 3 
 4 void test() {
 5     using namespace std;
 6 
 7     int n;
 8     cin >> n;
 9     
10     Vector<double> x1(n);
11     for(auto i = 0; i < n; ++i)
12         x1.at(i) = i * 0.7;
13 
14     output(x1);
15 
16     Vector<int> x2(n, 42);
17     Vector<int> x3(x2);
18 
19     output(x2);
20     output(x3);
21 
22     x2.at(0) = 77;
23     output(x2);
24 
25     x3[0] = 999;
26     output(x3);
27 }
28 
29 int main() {
30     test();
31 }

 1 #pragma once
 2 #include<iostream>
 3 #include<stdexcept>
 4 template<typename T>
 5 class Vector{
 6     public:
 7         Vector(size_t s){
 8             size=s;
 9             data=new T[size];
10         }
11         Vector(size_t s,const T &value){
12             size=s;
13             data=new T[size];
14             for (size_t i=0;i<size;i++){
15                 data[i]=value;
16             }
17         }
18         Vector(const Vector& other){
19             size=other.size;
20             data=new T[size];
21             for(size_t i=0;i<size;i++){
22                 data[i]=other.data[i];
23             }
24         }
25         ~Vector(){delete[] data;} 
26         size_t get_size() const{
27             return size;
28         }
29         T& at(size_t index) const{
30         if(index>=size){
31             throw std::out_of_range("0");
32         }
33         return data[index];}
34         T& operator[](size_t index) const{
35             if(index>=size){
36                 throw std::out_of_range("false");
37             }
38             return data[index];
39         }
40         friend void output(const Vector& vec){
41             for(size_t i=0;i<vec.size;i++){
42                 std::cout<<vec.data[i]<<std::endl;
43             }
44         }
45         private:
46             T* data;
47             size_t size;
48         
49 };

 1 #include<iostream>
 2 #include<iomanip>
 3 #include<fstream>
 4 
 5 using namespace std;
 6 
 7 void output(ostream &out) {
 8     for(int i=0;i<=26;i++){
 9         for(int j=0;j<=26;j++)
10         {
11             char m,n;
12             if(i==0&&j==0){
13                 char t = ' ';
14                 out<<setw(2)<<t;
15             }
16             else if(j==0&&i!=0){
17                 out<<setw(2)<<i;
18             }
19             else if(i==0&&j!=0){
20                 char m='a'+j-1;
21                 out<<setw(2)<<m;
22             }
23             else if(i!=0&&j!=0){
24                 char n=(i+j-1+26)%26+'A';
25                 out<<setw(2)<<n;
26             }
27 
28         }
29         out<<endl;
30     }
31 }
32 int main(){
33 
34     output(cout);
35 
36     ofstream outFile("cipher_key.txt");
37     output(outFile);
38     outFile.close();
39 
40     return 0;
41 }