cpp/while/reverse Source

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Given a non-negative number, print that number in reverse (e.g. if they enter <tt>123</tt> output <tt>321</tt>).
If the number is negative, simply print <tt>error</tt>.
Keep in mind that there are a few ways to do this, but we suggest you consult your idioms for isolating digits which might also help you on your homework.
Important: 0 may be an "edge case". Make sure you print it out appropriately!

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Copied from problem cpp/cs102/practice6/tippingCalculator (author: jmell@usc.edu)
Copied from problem cpp/cs102/practice5/computingPie (author: jmell@usc.edu)

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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>

using namespace std;

int main()
{
long num;
cout << "Input a number: ";
cin >> num;
cout << "Answer: ";

if (\[ REDACTED ]\)
{
\[ REDACTED ]\
}
else if (\[ REDACTED ]\ )
{
cout << "error" << endl;
}
else
{
\[
REDACTED
]\
cout << endl;
}
return 0;
}
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 [{}]

[
{"stdin":"0", "args":[]},
{"stdin":"-438", "args":[]},
{"stdin":"123456789", "args":[]},
{"stdin":"11210", "args":[]}
]
C++ test suite
See manual

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

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

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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"]

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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	<p>Given a non-negative number, print that number in reverse (e.g. if they enter <tt>123</tt> output <tt>321</tt>). <p>If the number is negative, simply print <tt>error</tt>.</p> <p>Keep in mind that there are a few ways to do this, but we suggest you consult your idioms for isolating digits which might also help you on your homework.</p> <p>Important: 0 may be an "edge case". Make sure you print it out appropriately!</p>
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	Copied from problem cpp/cs102/practice6/tippingCalculator (author: jmell@usc.edu) Copied from problem cpp/cs102/practice5/computingPie (author: jmell@usc.edu) 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; int main() { long num; cout << "Input a number: "; cin >> num; cout << "Answer: "; if (\[ REDACTED ]\) { \[ REDACTED ]\ } else if (\[ REDACTED ]\ ) { cout << "error" << endl; } else { \[ REDACTED ]\ cout << endl; } return 0; }
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 `[{}]`	[ {"stdin":"0", "args":[]}, {"stdin":"-438", "args":[]}, {"stdin":"123456789", "args":[]}, {"stdin":"11210", "args":[]} ]
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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