ordinal – Ordinal numerals – Computer Science by Example

ordinal – Ordinal numerals

A podium: 1st, 2nd and 3rd

In English, we can abbreviate an ordinal numeral by appending the last two letters of the word with the corresponding number. For example, “first” can be abbreviated as “1st”; “second” can be formatted as “2nd”; “third” can be formatted as “3rd”; “fourth” can be formatted as “4th”.

Write a program that given some numbers, formats the corresponding English ordinal numerals.

Each line of input contains a natural number n where 0 < n < 10 000.

For each line of input there should be a line of output with the number given on the input followed by the English ordinal suffix.

Example input

Example output

1st
2nd
3rd
4th
56th

The `suffix` and `ordinal` functions

Your program should be implemented using two functions suffix and ordinal. The suffix function should return a string with just the suffix. The ordinal function should return a string with the abbreviated ordinal — the number followed by the suffix. Please refer to the information for your chosen language:

Python definitions: def suffix(n):, def ordinal(n):;
C prototypes: const char* suffix(int);, char* ordinal(int, char*); — ordinal should write the string to the given buffer and return a pointer to it whereas suffix should return a pointer to a constant string;
Haskell type: suffix, ordinal :: Int -> String;
C++ prototypes: const char* suffix(int);, char* ordinal(int, char*); — ordinal should write the string to the given buffer and return a pointer to it whereas suffix should return a pointer to a constant string;
C# definitions: public static string Suffix(int n), public static string Ordinal(int n) — available in a public class Program
Java definitions: public static String suffix(int n), public static String ordinal(int n) — available in a public class Ordinal
JavaScript definitions: function suffix(n), function ordinal(n);
Lua definitions: function suffix (n), function ordinal (n);
Ruby definitions: def suffix(n), def ordinal(n).

Scoring

1/6: works for the above example but produces output in an incorrect format
2/6: works for the above example and produces output in the correct format
4/6: works for other test cases
5/6: works for edge cases
6/6: implements the required functions

try first: oddeven calc

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