cpp/classes/ruleof3 Source

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Property Value

Description
html markup
shown to student

A memory bug.

Epilogue
html markup
shown when solved

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Public permissions remove
Remarks
Comments, history, license, etc.

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Engine
Choices
json list of string, bool pairs
e.g. [["good", true], ["bad", false]]

Correct answer
Template / Reference solution

Template / Reference solution

#include <iostream>
#include <string>
using namespace std;

class TwoInts {
private:
int* data;

public:
TwoInts(int first, int second) {
data = new int[2];
data[0] = first;
data[1] = second;
}

~TwoInts() {
delete[] data;
}

\[
TwoInts(const TwoInts& c) {
data = new int[2];
data[0] = c.data[0]; data[1] = c.data[1];
}
\show:
;// todo?
]\

int get_first() { return data[0]; }
int get_second() { return data[1]; }
};

int biggest_of(TwoInts pair) {
return max(pair.get_first(), pair.get_second());
}

int main() {
TwoInts nums(10, 33);
cout << nums.get_first() << " " << nums.get_second() << endl;
cout << biggest_of(nums) << endl;
cout << nums.get_first() << " " << nums.get_second() << endl;
}

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

Forbidden substrings
json list of strings
e.g. ["for","while"]

remove
Solution visibility remove
Java imports
json list of importables
e.g. ["java.util.*"]

remove
Override Java classname
else defaults to
websheet name
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Dependent on other websheets?
json list of websheet names in this folder
e.g. ["DataStructure"]

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Is example?
i.e., just a demo
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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

Property	Value
Description html markup shown to student	A memory bug.
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	remove
Engine
Choices json list of string, bool pairs e.g. `[["good", true], ["bad", false]]`
Correct answer
Template / Reference solution
Template / Reference solution	#include <iostream> #include <string> using namespace std; class TwoInts { private: int* data; public: TwoInts(int first, int second) { data = new int[2]; data[0] = first; data[1] = second; } ~TwoInts() { delete[] data; } \[ TwoInts(const TwoInts& c) { data = new int[2]; data[0] = c.data[0]; data[1] = c.data[1]; } \show: ;// todo? ]\ int get_first() { return data[0]; } int get_second() { return data[1]; } }; int biggest_of(TwoInts pair) { return max(pair.get_first(), pair.get_second()); } int main() { TwoInts nums(10, 33); cout << nums.get_first() << " " << nums.get_second() << endl; cout << biggest_of(nums) << endl; cout << nums.get_first() << " " << nums.get_second() << endl; }
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
Forbidden substrings json list of strings e.g. `["for","while"]`	remove
Solution visibility	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	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'.