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⟦7580d4ac7⟧ Ada Source

    Length: 5120 (0x1400)
    Types: Ada Source
    Notes: 03_class, FILE, R1k_Segment, e3_tag, package body Square, seg_02fa5e

Derivation

└─⟦8527c1e9b⟧ Bits:30000544 8mm tape, Rational 1000, Arrival backup of disks in PAM's R1000
    └─⟦5a81ac88f⟧ »Space Info Vol 1« 
        └─⟦this⟧ 

with Text_Io;  
package body Square is


    procedure Move (Dir : Direction) is
    begin
        case Dir is
            when South =>  
                null;

            when North =>  
                if Line = Row_Line'First then
                    Line := Row_Line'Last;
                else
                    Line := Line - 1;
                end if;

            when East =>
                if Row = Row_Line'Last then
                    Row := Row_Line'First;
                else
                    Row := Row + 1;
                end if;

            when West =>  
                if Row = Row_Line'First then
                    Row := Row_Line'Last;
                else
                    Row := Row - 1;
                end if;

        end case;
    end Move;


    procedure Go_To_Center is

    begin
        Line := (Dim / 2) + 1;
        Row := (Dim / 2) + 1;
    end Go_To_Center;


    procedure Deposit (Token : in out Natural) is

    begin
        Square (Line, Row) := Token;
        Token := Token + 1;
    end Deposit;


    function Full return Boolean is

    begin
        if Token <= Dim * Dim then
            return False;
        else
            return True;
        end if;
    end Full;


    function Occup_Cell return Boolean is

    begin
        if Square (Line, Row) = 0 then
            return False;
        else
            return True;
        end if;
    end Occup_Cell;


    procedure Display is
        package Int_Io is new Text_Io.Integer_Io (Natural);

    begin
        for I in 1 .. Dim loop
            for J in 1 .. Dim loop
                Int_Io.Put (Square (I, J));
            end loop;  
            Text_Io.New_Line;
        end loop;
    end Display;


    procedure Verify is
        package Int_Io is new Text_Io.Integer_Io (Natural);

        Value, Result : Natural;
        Ok : Boolean := True;
    begin
        Value := Dim * (Dim * Dim + 1) / 2;
        for I in 1 .. Dim loop
            Result := 0;
            for J in 1 .. Dim loop
                Result := Result + Square (I, J);
            end loop;  
            if Result /= Value then
                Ok := False;
                exit;
            end if;
        end loop;

        Text_Io.New_Line;
        if Ok then
            Text_Io.Put ("Magic Square is OK.");
        else
            Text_Io.Put ("Magic Square is NOT OK.");
        end if;  
        Text_Io.New_Line;
        Text_Io.Put ("Sum rows & lines is : ");
        Int_Io.Put (Value);
    end Verify;

end Square;

    nblk1=4
    nid=3
    hdr6=6
        [0x00] rec0=2d rec1=00 rec2=01 rec3=01e
        [0x01] rec0=2f rec1=00 rec2=02 rec3=00c
        [0x02] rec0=1a rec1=00 rec2=04 rec3=000
        [0x03] rec0=0e rec1=00 rec2=02 rec3=000
    tail 0x21528d2f8849186b5f9fb 0x42a00088462060003
Free Block Chain:
  0x3: 0000  00 00 00 03 00 00 00 00 00 00 00 00 00 00 00 00  ┆                ┆