How to add 2 Files in one File

Question

First,ask user to enter numbers next, after arranging the numbers add this in the new file.

 

for example:

The number which have been entered for first File: 69  25  44  33  12

 

                                                               File 1

 69            25            44             33              12

 

                                                                             File 2

 

 The Number which have been entered by user is:  65      95     74       21        41      10

 

 

 65         95         74          21           41         10

 

                                                           File 3

 

 

 

 10           12            21             25             33             41            44         65       69        74            95