RECORDS AND PROCEDURES
The following program demonstrates passing a record to a procedure, which updates the record, then prints the updated time.

	program  TIME (input,output);
	type     time = record
	                   seconds, minutes, hours : integer
	                end;
	var  current, next : time;

	{ function to update time by one second }
	procedure  timeupdate( var now : time); {variable parameter}
	var  newtime : time;                    {local variable}
	begin
	     newtime := now;                    {use local instead of orginal}
	     newtime.seconds := newtime.seconds + 1;

	     if  newtime.seconds = 60  then
	     begin
	        newtime.seconds := 0;
	        newtime.minutes := newtime.minutes + 1;
	        if  newtime.minutes = 60  then
	        begin
	             newtime.minutes := 0;
	             newtime.hours := newtime.hours + 1;
	             if  newtime.hours = 24  then
	                newtime.hours := 0
	        end
	     end;
	     writeln('The updated time is ',newtime.hours,':',newtime.minutes,
    	         ':',newtime.seconds)
	end;

	begin
	      writeln('Please enter in the time using hh mm ss');
	      readln( current.hours, current.minutes, current.seconds );
	      timeupdate( current )
	end.

Copyright B Brown/P Henry, 1988-1999. All rights reserved.