cpp/references/examples/reset

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Description
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Resetting a variable using pass-by-reference syntax.

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Engine
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json list of string, bool pairs
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Correct answer
Template / Reference solution

Template / Reference solution

#include <iostream>
using namespace std;

void reset(int& x) // pass a _reference_ (pointer)
{
x = 0; // writes to address passed in
}

int main() {
int num = 103;
reset(num); // pass by _reference_ (implicit pointer)
cout << num;
}

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

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Java imports
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e.g. ["java.util.*"]

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Property	Value
Description html markup shown to student	Resetting a variable using pass-by-reference syntax.
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> using namespace std; void reset(int& x) // pass a _reference_ (pointer) { x = 0; // writes to address passed in } int main() { int num = 103; reset(num); // pass by _reference_ (implicit pointer) cout << num; }
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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