my9.23（输入输出，写操作）

 1 #include <iostream>
 2 #include <fstream>
 3 using namespace std;
 4 void write(int data,int len)
 5 {
 6     int numberOfData=data;
 7     int pNum[1000];
 8     for (int i=0; i<len ; i++)
 9         pNum[i]= numberOfData;
10 
11     fstream dataFile;
12     dataFile.open("text.txt",ios::out);
13     if(!dataFile)
14     {
15         cout<<"fail to dataFile"<<endl;
16         exit(0);
17     }
18     for (int i=0;i<len;i++)
19         dataFile<<pNum[i];
20     dataFile.close();
21 
22 }
23 int main()
24 {    
25     int a, b;
26     cout<<"enter two number, please"<<endl;
27     cin>> a >> b ;
28     int max , min;
29     if (a>b)
30         {
31              min=b;
32              max=a;
33         }
34     else
35         if(a<b)
36         {
37          min=a , 
38          max =b;
39         }
40         int len=max-min+1;
41         cout<<"the number is "<<endl;
42     for(int v = min ; v<=max ; ++v)    
43         {
44             cout<<v<<" ";
45             if((v-min+1)%10==0)
46                 cout<<endl;
47         
48 
49             write(v,len);
50         }
51     return 0 ;
52 }