A+B: Difference between revisions

=={{header|J}}==

In the following line, <tt>(1!:1) 3</tt> reads a line from STDIN; <tt>_1}.</tt> drops the last newline character; <tt>:.0</tt> then cuts it into "words", each

of which are converted into a number (by <tt>".:.0</tt>), resulting in a vector which is then reduced with addition using <tt>+/</tt>, producing the result.

<lang J>+/".;.0 (_1}.(1!:1) 3)</lang>

Here's a little script, called "a+b.ijs":

<lang J>#!/Applications/j602/bin/jconsole

echo +/".;.0 (_1}.(1!:1) 3)

exit ''</lang>

Here is the execution of the script:

<lang>echo 2 3 | ./a+b.ijs

5</lang>