cpp/control/nth Source

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Description
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shown to student

This program should take a non-negative integer input <tt>n</tt>.
It should print out the
English <i>ordinal number</i> corresponding to <tt>n</tt>.
For example,
<ul><li>for input <tt>1</tt> it should output <tt>1st</tt>
<li>for input <tt>2</tt> it should output <tt>2nd</tt>
<li>for input <tt>3</tt> it should output <tt>3rd</tt>
<li>for input <tt>4</tt> it should output <tt>4th</tt>
</ul>
et cetera.
<p>Hint: the last digit is important, and you can compute the last
digit using <tt>n % 10</tt>, which is the remainder when you divide <tt>n</tt>
by 10. You also need a special case when the last two digits are 11, 12, or 13.

Epilogue
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shown when solved

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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>
using namespace std;

int main() {
int n;
cin >> n;
\[
if (n % 100 >= 11 && n % 100 <= 13)
cout << n << "th";
else if (n % 10 == 1)
cout << n << "st";
else if (n % 10 == 2)
cout << n << "nd";
else if (n % 10 == 3)
cout << n << "rd";
else
cout << n << "th";
]\
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": "1"},
{"stdin": "2"},
{"stdin": "3"},
{"stdin": "4"},
{"stdin": "5"},
{"stdin": "6"},
{"stdin": "7"},
{"stdin": "8"},
{"stdin": "9"},
{"stdin": "10"},
{"stdin": "21"},
{"stdin": "132"},
{"stdin": "4323"},
{"stdin": "12984"},
{"stdin": "11"},
{"stdin": "212"},
{"stdin": "90013"}
]

C++ test suite
See manual

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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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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"]

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Property	Value
Description html markup shown to student	This program should take a non-negative integer input <tt>n</tt>. It should print out the English <i>ordinal number</i> corresponding to <tt>n</tt>. For example, <ul><li>for input <tt>1</tt> it should output <tt>1st</tt> <li>for input <tt>2</tt> it should output <tt>2nd</tt> <li>for input <tt>3</tt> it should output <tt>3rd</tt> <li>for input <tt>4</tt> it should output <tt>4th</tt> </ul> et cetera. <p>Hint: the last digit is important, and you can compute the last digit using <tt>n % 10</tt>, which is the remainder when you divide <tt>n</tt> by 10. You also need a special case when the last two digits are 11, 12, or 13.
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; int main() { int n; cin >> n; \[ if (n % 100 >= 11 && n % 100 <= 13) cout << n << "th"; else if (n % 10 == 1) cout << n << "st"; else if (n % 10 == 2) cout << n << "nd"; else if (n % 10 == 3) cout << n << "rd"; else cout << n << "th"; ]\ 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": "1"}, {"stdin": "2"}, {"stdin": "3"}, {"stdin": "4"}, {"stdin": "5"}, {"stdin": "6"}, {"stdin": "7"}, {"stdin": "8"}, {"stdin": "9"}, {"stdin": "10"}, {"stdin": "21"}, {"stdin": "132"}, {"stdin": "4323"}, {"stdin": "12984"}, {"stdin": "11"}, {"stdin": "212"}, {"stdin": "90013"} ]
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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