「Hello、World！」の作者は何ですか？

通常、新しいトーゴのベストランゲージの支持者は、次のようなものを学習および宣伝するための独自の広告ミニプログラムを作成します。

ageOfBob = 0
ageOfMary = 0

print("Input Bob's age: ")
read(ageOfBob)

print("Input Marry's age: ")
read(ageOfMary)

// Do the math
if (ageOfBob > ageOfMary)
   print("Bob is older than Mary by ", ageOfBob - ageOfMary, " years")
else if (ageOfBob < ageOfMary)
   print("Mary is older than Bob by ", ageOfMary - ageOfBob, " years") 
else 
   print("Mary and Bob are of the same age")

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---, , , :

const MAX_PERSON_AGE = 120
const MIN_PERSON_AGE = 1

int getAge(string name) {
   age = 0

   print("Input ", name, "'s age: ")
   read(age)

   if (age < MIN_PERSON_AGE or age > MAX_PERSON_AGE)
      throw IncorrectAgeInputException
   else 
      return age
}

try {
   ageOfBob = getAge("Bob")
   ageOfMary = getAge("Mary")
} catch (IncorrectAgeInputException) {
      print("You're doing it wrong!")
}

// Do the math
...

( — ) ( Don't Repeat Yourself), , . , getAge unit-…

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Ada. Ada 1983- " , ", Haskell Rust. Ada native- , . …

with ada.text_io, ada.integer_text_io, ada.io_exceptions;
use  ada.text_io;

procedure main is
   type Age is range 1 .. 120;

   package io is new ada.text_io.integer_io(num => Age);

   ageOfBob, ageOfMary : Age;
begin
   put_line("Input Bob's age: ");
   io.get(ageOfBob);

   put_line("Input Mary's age: ");
   io.get(ageOfMary);

   -- Do the math
   if ageOfBob > ageOfMary then
      put_line("Bob is older than Mary by" & Age'Image(ageOfBob - ageOfMary) & " years");
   elsif ageOfBob < ageOfMary then
      put_line("Mary is older than Bob by" & Age'Image(ageOfMary - ageOfBob) & " years");
   elsif ageOfBob = ageOfMary then
      put_line("Mary and Bob are of the same age");
   end if;

exception
   when ada.io_exceptions.Data_Error =>
      put_line("You're doing it wrong!");
   when others => null;
end main;

Age :

type Age is range 1 .. 120;

ada.text_io.integer_io, :

package io is new ada.text_io.integer_io(num => Age); 

io.get(ageVar), ageVar — Age, , Age, Data_Error.

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