>>> ================================ RESTART ================================
>>>



1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 1
Enter a filename (if you hit enter, data1.txt will be opened): data_bad.txt
Data could not be loaded (the number of columns is not the same for all rows).



1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 1
Enter a filename (if you hit enter, data1.txt will be opened): unexisting_file.txt
File could not be opened.



1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 1
Enter a filename (if you hit enter, data1.txt will be opened):



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 2
Enter a row (as a number) or a column (as an uppercase letter): 4
Invalid selection



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 2
Enter a row (as a number) or a column (as an uppercase letter): G
Invalid selection



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 2
Enter a row (as a number) or a column (as an uppercase letter): d
Invalid selection



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 2
Enter a row (as a number) or a column (as an uppercase letter): DD
Invalid selection



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 2
Enter a row (as a number) or a column (as an uppercase letter): D
Minimum is: 0.1



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 3
Enter a row (as a number) or a column (as an uppercase letter): E
Maximum is: 5.0



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 4
Enter a row (as a number) or a column (as an uppercase letter): 1
The sum is: 15.0



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 5
Enter a row (as a number) or a column (as an uppercase letter): 1
The average is: 3.0



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 6
Enter a column and the order(a/A-ascending, d/D-descending) separated by comma (e.g.:  D,a) : D,a



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
|   2 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   3 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 6
Enter a column and the order(a/A-ascending, d/D-descending) separated by comma (e.g.:  D,a) : D,d



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   2 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 7
Enter a row (as a number) or a column (as an uppercase letter): 1



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   4 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 7
Enter a row (as a number) or a column (as an uppercase letter): 3



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   4 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   5 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 7
Enter a row (as a number) or a column (as an uppercase letter): 6



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   2 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   4 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   5 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
|   6 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 7
Enter a row (as a number) or a column (as an uppercase letter): A



-------------------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |   F   |
-------------------------------------------------------
|   1 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   2 | 0.00  | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   3 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   4 | 0.00  | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   5 | 0.00  | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
|   6 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
-------------------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 7
Enter a row (as a number) or a column (as an uppercase letter): D



---------------------------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |   F   |   G   |
---------------------------------------------------------------
|   1 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   2 | 0.00  | 6.00  | 7.00  | 0.00  | 8.00  | 9.00  | 0.00  |
|   3 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   4 | 0.00  | 1.00  | 2.00  | 0.00  | 3.00  | 4.00  | 5.00  |
|   5 | 0.00  | 1.10  | 2.20  | 0.00  | 3.30  | 0.10  | 0.30  |
|   6 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
---------------------------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 7
Enter a row (as a number) or a column (as an uppercase letter): H



-----------------------------------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |   F   |   G   |   H   |
-----------------------------------------------------------------------
|   1 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   2 | 0.00  | 6.00  | 7.00  | 0.00  | 8.00  | 9.00  | 0.00  | 0.00  |
|   3 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   4 | 0.00  | 1.00  | 2.00  | 0.00  | 3.00  | 4.00  | 5.00  | 0.00  |
|   5 | 0.00  | 1.10  | 2.20  | 0.00  | 3.30  | 0.10  | 0.30  | 0.00  |
|   6 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
-----------------------------------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 7
Enter a row (as a number) or a column (as an uppercase letter): 12
Invalid selection



-----------------------------------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |   F   |   G   |   H   |
-----------------------------------------------------------------------
|   1 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   2 | 0.00  | 6.00  | 7.00  | 0.00  | 8.00  | 9.00  | 0.00  | 0.00  |
|   3 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   4 | 0.00  | 1.00  | 2.00  | 0.00  | 3.00  | 4.00  | 5.00  | 0.00  |
|   5 | 0.00  | 1.10  | 2.20  | 0.00  | 3.30  | 0.10  | 0.30  | 0.00  |
|   6 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
-----------------------------------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 7
Enter a row (as a number) or a column (as an uppercase letter): X
Invalid selection



-----------------------------------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |   F   |   G   |   H   |
-----------------------------------------------------------------------
|   1 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   2 | 0.00  | 6.00  | 7.00  | 0.00  | 8.00  | 9.00  | 0.00  | 0.00  |
|   3 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   4 | 0.00  | 1.00  | 2.00  | 0.00  | 3.00  | 4.00  | 5.00  | 0.00  |
|   5 | 0.00  | 1.10  | 2.20  | 0.00  | 3.30  | 0.10  | 0.30  | 0.00  |
|   6 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
-----------------------------------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 8
Enter a row (as a number) or a column (as an uppercase letter): 1



-----------------------------------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |   F   |   G   |   H   |
-----------------------------------------------------------------------
|   1 | 0.00  | 6.00  | 7.00  | 0.00  | 8.00  | 9.00  | 0.00  | 0.00  |
|   2 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
|   3 | 0.00  | 1.00  | 2.00  | 0.00  | 3.00  | 4.00  | 5.00  | 0.00  |
|   4 | 0.00  | 1.10  | 2.20  | 0.00  | 3.30  | 0.10  | 0.30  | 0.00  |
|   5 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
-----------------------------------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 8
Enter a row (as a number) or a column (as an uppercase letter): 2



-----------------------------------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |   F   |   G   |   H   |
-----------------------------------------------------------------------
|   1 | 0.00  | 6.00  | 7.00  | 0.00  | 8.00  | 9.00  | 0.00  | 0.00  |
|   2 | 0.00  | 1.00  | 2.00  | 0.00  | 3.00  | 4.00  | 5.00  | 0.00  |
|   3 | 0.00  | 1.10  | 2.20  | 0.00  | 3.30  | 0.10  | 0.30  | 0.00  |
|   4 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
-----------------------------------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 8
Enter a row (as a number) or a column (as an uppercase letter): A



---------------------------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |   F   |   G   |
---------------------------------------------------------------
|   1 | 6.00  | 7.00  | 0.00  | 8.00  | 9.00  | 0.00  | 0.00  |
|   2 | 1.00  | 2.00  | 0.00  | 3.00  | 4.00  | 5.00  | 0.00  |
|   3 | 1.10  | 2.20  | 0.00  | 3.30  | 0.10  | 0.30  | 0.00  |
|   4 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
---------------------------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 8
Enter a row (as a number) or a column (as an uppercase letter): C



-------------------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |   F   |
-------------------------------------------------------
|   1 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  | 0.00  |
|   2 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  | 0.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  | 0.00  |
|   4 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
-------------------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 8
Enter a row (as a number) or a column (as an uppercase letter): H
Invalid selection



-------------------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |   F   |
-------------------------------------------------------
|   1 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  | 0.00  |
|   2 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  | 0.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  | 0.00  |
|   4 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
-------------------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 8
Enter a row (as a number) or a column (as an uppercase letter): F



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   2 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
|   4 | 0.00  | 0.00  | 0.00  | 0.00  | 0.00  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice:  9
Enter: row, column, new_value (separated by commas): 4,C,12



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   2 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
|   4 | 0.00  | 0.00  | 12.00 | 0.00  | 0.00  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 11
Enter a new filename: data_new.txt



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   2 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
|   4 | 0.00  | 0.00  | 12.00 | 0.00  | 0.00  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 11
Enter a new filename: data_new.txt
This file already exists. Do you want to overwrite it (y/n)? n



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   2 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
|   4 | 0.00  | 0.00  | 12.00 | 0.00  | 0.00  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 10



-----------------------------------------------
|     |   A   |   B   |   C   |   D   |   E   |
-----------------------------------------------
|   1 | 6.00  | 7.00  | 8.00  | 9.00  | 0.00  |
|   2 | 1.00  | 2.00  | 3.00  | 4.00  | 5.00  |
|   3 | 1.10  | 2.20  | 3.30  | 0.10  | 0.30  |
|   4 | 0.00  | 0.00  | 12.00 | 0.00  | 0.00  |
-----------------------------------------------
1 - Open and load from a file
2 - Minimum
3 - Maximum
4 - Sum
5 - Average
6 - Sort  (by column, ascending or descending)
7 - Insert
8 - Delete
9 - Modify an element
10 - Save
11 - Save as (specify new file name)
0 - Exit
Your choice: 0
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