# 041. Use `g0.d` and `:` edit descriptors with infinite repeat count to write delimited (CSV, etc.) output topic: {ref}`input-and-output` - `g0.d` will appropriately format any intrinsic type. - `:` causes processing to stop until the next I/O list item. - `*` repeats a format group as many times as necessary. ```{literalinclude} ../../src/csv.f90 :language: fortran :caption: csv.f90 | |

``` ```{code-block} text :caption: Output[^gfortran-version] x,y,r 1,1,1.4142 1,2,2.2361 1,3,3.1623 2,1,2.2361 2,2,2.8284 2,3,3.6056 3,1,3.1623 3,2,3.6056 3,3,4.2426 ``` [^gfortran-version]: Compiled using `GNU Fortran (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0` with no flags ```{note} Intrinsic function `norm2` is part of the Fortran 2008 standard. ``` ---

Combine the G0.d and colon edit descriptors, along with infinite repeat count, to write delimited (CSV, etc.) output. pic.twitter.com/QfMmdEj7Fn
— FortranTip (@fortrantip) December 22, 2021