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Property	Value
Description html markup shown to student	​ Define a function <tt>is_even</tt> that takes an integer argument <tt>x</tt>, and returns the <tt>bool</tt> value <tt>true</tt> when <tt>x</tt> is even, and <tt>false</tt> otherwise. <p> <b>Note: don't use <tt>cout</tt></b> in your code. Just <tt>return</tt> the appropriate value. The grader will automatically add print statements as it sees fit. ​
Epilogue html markup shown when solved	​ remove
Public permissions	open: anyone can solve, see in listings, see sourceopen: open, but when viewing source, redact solution (default)closed-source, but list publicly and anyone can attempt itclosed-source, and hide from listings (need direct URL to attempt)draft: don't let anyone other than me see this at all remove
Remarks Comments, history, license, etc.	​ remove
Engine	Select one... (default)JavaC++ (call main with stdin and args)C++ (call functions directly)Multiple true/falseShort answer
Choices json list of string, bool pairs e.g. [["good", true], ["bad", false]]	​
Correct answer
Template / Reference solution	​
Template / Reference solution	​ #include <iostream> using namespace std; ​ \[ REDACTED ]\ ​
Java test suite See manual	​
C++ test suite json list of stdin/args tests e.g. [{"stdin":"hi", "args":["4", "5"]}, {"stdin":"noargs"}] to just run once with no input use [{}]	​
C++ test suite See manual	[ ["check-function", "is_even", "bool", ["int"]], ["call-function", "is_even", ["11"]], ["call-function", "is_even", ["4"]], ["call-function", "is_even", ["103"]], ["call-function", "is_even", ["52"]] ] ​
Forbidden substrings json list of strings e.g. ["for","while"]	​ remove
Solution visibility	AlwaysAfter 1 attemptAfter solving or 2 attemptsAfter solving or 3 attemptsAfter solving or 4 attemptsAfter solving or 5 attemptsAfter solving (default)Never remove
Java imports json list of importables e.g. ["java.util.*"]	​ remove
Override Java classname else defaults to websheet name	remove
Dependent on other websheets? json list of websheet names in this folder e.g. ["DataStructure"]	​ remove
Is example? i.e., just a demo	False (default)True remove
Add compiler flag(s) json list of flags e.g. ["-Wno-unused-variable"]	​ remove
Remove default compiler flag(s) json list of flags see default_cppflags e.g. ["-Wno-write-strings"]	​ remove

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Note: problems are open-source by default (see 'Public permissions'). Assumed license for open problems is Creative Commons 4.0 Attribution-ShareAlike unless specified in 'Remarks'.