***************** Flow Chart Design Language Examples *********************
Cut these examples, load them in your editor and compile them to familiarize
yourself with the Flow Chart Design Language (FDL)

{* EXAMPLE #1 : PROGRAM BRKSTR *}

^program BRKSTR.C;
^module brkstr();
^header Module brkstr();
^footer Module brkstr();
^date dec 14 1991;

Clear the blank point array, BLNK_PTS;
While not the end of the input string do
        if input string character = blank then  
          store the position of the blank in the BLNK_PTS;
        endif;
        increment the character position counter;
endwhile;
Save last character position in BLNK_PTS for the end of string;

Set j = number of stored blanks;

for i = 0 j + 1 do
        If block = UNTIL or WHILE or IF then
         Set the variable MAXLEN = 16;
        endif;
        If block = FOR or PROCESS then
         Set MAXLEN = 18;
        endif;
        If block = CALL then 
         Set MAXLEN = 17;
        endif;
        If Any words in the string > MAXLEN then
          Call cg_error and pass it the input string;
          Increment the code generator error count;
        endif;
endfor;

While All words not processed do
        If Exceeded number of substrings then
          CALL cg_error and pass it the input string;
          Increment the code generator error count;
        endif;
        Clear the temporary string buffer;
        While Substring length <= length allowed do
            Copy next word into temporary buffer;
            Ife All words not processed then
               Set variable FIT = 1;
            else
               Set variable FIT = 0;
               CALL writ_str() to write the string to the output file;
               Break out of while loop;
            endelse;
        endwhile;  
        If Fit = 1 then
          Append an EOL to the temporary buffer;
          CALL writ_str() to write the string to the output file;
        endif;
        Increment the number of substrings;
endwhile;
ife Error count = 0 then
 Return a successful status to the calling module;
else
 Return a CANCELED status to the calling module;
endelse;
^endmod Return To Caller;

^module cg_error();
^header Module cg_error();
^footer Module cg_error();
^date nov 6 1988;

Build the error string to indicate the input string doesn't fit;
CALL put_msg() to write the error string on the console;
^endmod Return To Caller;

^module writ_str;
^header Module writ_str();
^footer Module writ_str();
^date nov 6 1988;

call center() to get the coords to center the string;
call put_xy() to write the x,y coords;
Write the string to the output file;
^endmod Return To Caller;
^endprg;

***************** Flow Chart Design Language Examples *********************

{** EXAMPLE #2 **}
^program COMPILER.TST;
^module One;
^date Oct 22 1988;
^header MODULE One;
^footer MODULE One;

Initialize x;
While x != 10 do
        Input a number;
        Multiple the number by 12;
        If result > 144 then
                set an error indication;
                for x = maxval 0 - 4 do
                        for z = minval maxval + 2 do
                                test the for statements;
                                clear another array!;
                endfor; 
                        ife this is working then 
                                perform this;
                        else
                                perform that;
                        endelse;
                endfor;
        Endif;
        increment x;
Endwhile;
If error exists then
        output message to the screen;
        increment the error count;
        clear all variables;
endif;
call Module Two to perform more number operations;
for  x = 100 0 -1 do
        y = y * x;
        print y;
        y = y/34;
endfor;
^endmod Exit Program;

^module Two;
^header MODULE Two;
^footer MODULE Two;
^date Oct 23 1988;

Repeat
        input a number;
        If the number is negative then
                prompt the user, get another input;
        endif;
Until the number is positive;
Call module Three for test purposes;
While the number < 100 do
        multiply the number by 10;
        divide the number by 7;
Endwhile;
^endmod Return to Caller;  

{***^program Test;***}
^module Three;
^date Nov 19 1989;
^header Selection Test;
^footer Selection Test;

This is a test of;
the module and page selector;
Ife this doesn't work then
        I'll have to do some more debugging;
        I'm testing this program now to see if the;
        on-page connectors will go to lower case;
else
        I'll try to work on the print routine;
        need to fill in more blocks;
endelse;
If this exceeds complexity then
        I'll fix it;
endif;
While I'm doing that do
        I'll keep trying to create;
        sample modules to test the flow chart compiler on;
endwhile; 
While x != 10 do
        Input a number;
        Multiple the number by 12;
        If result > 144 then
                set an error indication; 
                for x = maxval 0 - 4 do
                        for z = minval maxval + 2 do
                                test the for statements;
                                clear another array!; 
                endfor; 
                        ife this is working then 
                                perform this;
                        else
                                perform that;
                        endelse;
                endfor;
        Endif;
        increment x;  
Endwhile;

Another test of the FCC; {**}
this is an attempt to create a page 4;
I am just typing in any text;
to create blocks for another page;{**}
{*** If this doesn't create page 4 then
        I'll have to type in more stuff;
endif; **}

Move the next block down in field #2;
Also add more filler in to test the increment of;
the on and off page connectors;

repeat
  repeat
                Saddam Hussein will not rule;
                the region will be more stable;
  until the ground war is over;
  more fill in to test the flow chart compiler;
until we win the war with Iraq;
{***************}
for a = 5 0 -1 do
        this is a test of the module;
        that adds a WHILPAGRT block to the;
        block stack when the a WHILE block follows ;
        an IFE block and the WHILE block has to be ;
        placed on another page;
endfor;

Repeat
        4+4 = 8; 8+8 = 16/1;
        if 8 < 7 then 7 > 6;
        endif;
until 4+4 > 9;
While page 4 doesn't exist do
{**}    type more stuff;
        I'm feeling sick today;
        too bad;
        I hope I'll get better by tomorrow;
        me too;
endwhile;
{**}this is a test;
this is only a test;
if this were a real drill then
        you would be contacted;
{**}    by someone impotent; 
endif;
^endmod Return to Caller;

^endprg;