1: Ashley | 01033438392 | Wellington, New Zealand | 1987- 4-14
2: Aloha | 01087651234 | Hawaii, United States of America | 1988- 9-23
3: Jack | 01082840184 | Beijing, China | 1989- 6-19

printf("%10s | %11s | %20s | %4d-%2d-%2dn",name,phone,address,year,month,day);

package Integer_IO is new Ada.Text_IO.Integer_IO (Integer);

procedure Output_Date ( Day : in Integer; Month: in Integer; Year: in Integer) is
begin
  Integer_IO.Put(Item => Day, Width => 2);
  Text_IO.Put("-");
  Integer_IO.Put(Item => Month, Width => 2);
  Text_IO.Put("-");
  Integer_IO.Put(Item => Year, Width => 4);
end Output_Date;

procedure Output_String ( Item : in String;
                          Width : in Integer;
                          Separator : in String := "|";
                          Truncate : Boolean := False) is
  Field_Index : Integer := Text_IO.Col;
begin
  if Item'length > Width and Truncate then
    Text_IO.Put(Item(1..Width) & Separator);
  else
    Text_IO.Put(Item) & Separator;
  end if;

  Text_IO.Set_Col ( Field_Index + Width + 1 );
end Output_String;

Name  : String  := "Ashley"
Phone : String  := "01033438392"
Address: String := "Wellington, New Zealand"

Day    : Integer := 14;
Month : Integer  := 4;
Year   : Integer := 1987;

Output_String(Item=> Name,    Width => 10);
Output_String(Item=> Phone,   Width => 11);
Output_String(Item=> Address, Width => 20);
Output_Date(Day,Month,Year);

Fill_Char : Character := ' ';

function Set_Fill (New_Fill : Character) return String is
begin
    Fill_Char := New_Fill;
    return "";
end Set_Fill;

--// Dumb tail-recursive implementation.
function Set_Width(Source : in String; Width : in Positive) return String is
begin
    if Width <= Source'length then --'
        return Source;
    else
        return Fill_Char & Set_Width(Source, Width - 1);
    end if;
end Set_Width;

Unfilled_String : constant String := "123456";
Filled_String : constant String := Set_Width(Unfilled_String & Set_Fill('0'), 8);
--// The above string should end up being "00123456"

function Label (J : Integer) return String is
   use Ada.Strings; use Ada.Strings.Fixed;
   Lower : String := Integer'Image(J * Bin_Size);
   Upper : String := Integer'Image((J + 1) * Bin_Size);
begin
   return Tail(Trim(Lower, Left), 4, '0') & "-" &
      Tail(Trim(Upper, Left), 4, '0') & " |*";
end Label;

Distribution of lengths:
0000-0100 |**********
0100-0200 |*****************************
0200-0300 |**********************
0300-0400 |***************
0400-0500 |**********
0500-0600 |*******
0600-0700 |****
0700-0800 |****
0800-0900 |**
0900-1000 |**
1000-1100 |*
1100-1200 |*

Ashley--
Aloha---
Jack----
--Ashley
---Aloha
----Jack

95: Ashley     | 0001033438392 | Wellington, New Zeal 2015-  5- 24
   96: Aloha      | 0001087651234 | Hawaii, United State 2015-  5- 27
   97: Jack       | 0001082840184 | Beijing, China       2015-  5- 30
 1220: Ashley     | 0001033438392 | Wellington, New Zeal 2015-  6-  2
 1221: Aloha      | 0001087651234 | Hawaii, United State 2015-  6-  5
 1222: Jack       | 0001082840184 | Beijing, China       2015-  6-  8

--  This package add support for formatted string as supported by C printf()

--  A simple usage is:
--
--     Put_Line (-(+"%s" & "a string"));
--
--  or with a constant for the format:
--
--     declare
--       Format : constant Formatted_String := +"%s";
--     begin
--       Put_Line (-(Format & "a string"));
--     end;
--
--  Finally a more complex example:
--
--     declare
--        F : Formatted_String := +"['%c' ; %10d]";
--        C : Character := 'v';
--        I : Integer := 98;
--     begin
--        F := F & C & I;
--        Put_Line (-F);
--     end;

--  Which will display:

--     ['v' ;         98]

--  Each format specifier is: %[flags][width][.precision][length]specifier

--  Specifiers:
--    d or i    Signed decimal integer
--    u         Unsigned decimal integer
--    o         Unsigned octal
--    x         Unsigned hexadecimal integer
--    X         Unsigned hexadecimal integer (uppercase)
--    f         Decimal floating point, lowercase
--    F         Decimal floating point, uppercase
--    e         Scientific notation (mantissa/exponent), lowercase
--    E         Scientific notation (mantissa/exponent), uppercase
--    g         Use the shortest representation: %e or %f
--    G         Use the shortest representation: %E or %F
--    c         Character
--    s         String of characters
--    p         Pointer address
--    %         A % followed by another % character will write a single %

--  Flags:

--    -         Left-justify within the given field width;
--              Right justification is the default.

--    +         Forces to preceed the result with a plus or minus sign (+ or -)
--              even for positive numbers. By default, only negative numbers
--              are preceded with a - sign.

--    (space)   If no sign is going to be written, a blank space is inserted
--              before the value.

--    #         Used with o, x or X specifiers the value is preceeded with
--              0, 0x or 0X respectively for values different than zero.
--              Used with a, A, e, E, f, F, g or G it forces the written
--              output to contain a decimal point even if no more digits
--              follow. By default, if no digits follow, no decimal point is
--              written.

--    ~         As above, but using Ada style based <base>#<number>#

--    0         Left-pads the number with zeroes (0) instead of spaces when
--              padding is specified.

--  Width:
--    number    Minimum number of characters to be printed. If the value to
--              be printed is shorter than this number, the result is padded
--              with blank spaces. The value is not truncated even if the
--              result is larger.

--    *         The width is not specified in the format string, but as an
--              additional integer value argument preceding the argument that
--              has to be formatted.
--  Precision:
--    number    For integer specifiers (d, i, o, u, x, X): precision specifies
--              the minimum number of digits to be written. If the value to be
--              written is shorter than this number, the result is padded with
--              leading zeros. The value is not truncated even if the result
--              is longer. A precision of 0 means that no character is written
--              for the value 0.

--              For e, E, f and F specifiers: this is the number of digits to
--              be printed after the decimal point (by default, this is 6).
--              For g and G specifiers: This is the maximum number of
--              significant digits to be printed.

--              For s: this is the maximum number of characters to be printed.
--              By default all characters are printed until the ending null
--              character is encountered.

--              If the period is specified without an explicit value for
--              precision, 0 is assumed.

--    .*        The precision is not specified in the format string, but as an
--              additional integer value argument preceding the argument that
--              has to be formatted.