Error: variable i cannot be read at compile time

[thedeemon]

On Monday, 8 January 2018 at 07:37:31 UTC, Vino wrote:
>>>  I tried to manipulate the writeln's as below but the output 
>>> is not as expected as it prints the data in row wise, where 
>>> as we need it in column wise.
...
> Using the function countUntil find the keys for each of the 
> column and store the result of each column in another files.

So, you don't need row wise output.