CSV data manipulation

CSV spreadsheet files are portable ways of storing tabular data. The CSV format is either flexible or ill defined, depending on a point of view, allowing for delimiters besides comma. For more information on CSV files please read Comma-separated values

CSV data manipulation is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

The task here is to read/write a CSV file, change some values and save the changes. For this task we will use the following CSV file:

C1,C2,C3,C4,C5

1,5,9,13,17

2,6,10,14,18

3,7,11,15,19

4,8,12,16,20