Help on Pascal Program: Pressure

Wed, 07 Apr 2010 13:19:57 -0700

Hi, I had a question about this program. I'm suppose to put the pressures in intervals. But everytime I read in multiple values, it outputs only the last value entered. I'm not allowed to use multiple variables for pressure, I only can use one and would have to do a loop to read in the values one by one. Can anyone tell me how I do that?

PROGRAM PRESSURES (INPUT, OUTPUT, DATA7, OUT7);

VAR N, PRESSURE, HIGH, LOW, TOTAL, ICOUNT, AVERAGE, INTERVAL,
PCOUNT: INTEGER;
DATA7, OUT7: TEXT;

(************************************************* *******************)

PROCEDURE ProcessPressures(VAR HIGH, PRESSURE, LOW, TOTAL, AVERAGE,
PCOUNT: INTEGER);
BEGIN
TOTAL:= 0;
PCOUNT:= 0;
HIGH:= -MAXINT;
LOW:= MAXINT;
WRITELN('ENTER PRESSURES:');
READ(PRESSURE);
WHILE NOT EOF DO
BEGIN
PCOUNT:= PCOUNT + 1;
TOTAL:= TOTAL + PCOUNT;
IF EOLN
THEN READLN;
IF NOT EOF
THEN READ(PRESSURE);
IF PRESSURE > HIGH
THEN HIGH:= PRESSURE;
IF PRESSURE < LOW
THEN LOW:= PRESSURE;

END;
AVERAGE:= TOTAL DIV PCOUNT;
END;

(************************************************* ********************)

PROCEDURE PrintsSummaryResults(VAR INTERVAL, PRESSURE, HIGH, LOW,
AVERAGE: INTEGER);
BEGIN
WRITELN('NUMBER OF INTERVALS TO MONITOR: ', N);
WRITELN('***************************************** *************');
WRITELN('PROCESS 1 PRESSURE: ', PRESSURE);
WRITELN('PROCESS 2 PRESSURE: ', PRESSURE);
WRITELN('PROCESS 3 PRESSURE: ', PRESSURE);
WRITELN('PROCESS 4 PRESSURE: ', PRESSURE);
WRITELN('PROCESS 5 PRESSURE: ', PRESSURE);
WRITELN('PROCESS 6 PRESSURE: ', PRESSURE);
IF HIGH > 5000
THEN WRITELN('DANGER! OVERPRESSURE OF ', HIGH);
IF LOW < 14
THEN WRITELN('DANGER! VACUUM OF ', LOW);

WRITELN('HIGH PRESSURE IS ', HIGH);
WRITELN('LOW PRESSURE IS ', LOW);
WRITELN('AVERAGE PRESSURE IS ', AVERAGE);
WRITELN('***************************************** *************');
END;
(************************************************* *********************)

BEGIN
RESET(DATA7);
REWRITE(OUT7);
WRITE('ENTER NUMBER OF INTERVALS:');
READ(N);
ICOUNT:= 0;
WHILE NOT EOF DO
BEGIN
ProcessPressures(HIGH, PRESSURE, LOW, AVERAGE, TOTAL, PCOUNT);
PrintsSummaryResults(INTERVAL, PRESSURE, HIGH, LOW, AVERAGE);
ICOUNT:= ICOUNT + 1
END;
END.

Re: Help on Pascal Program: Pressure

Thu, 08 Apr 2010 20:31:50 -0700

program Pressures ;

CONST
    MAXREAL = 1.0E37 ;

type
    pressuretype = array [1 .. 1000] of real ;


    Procedure GetPressures (var n : integer ; var pressure : pressuretype) ;

    begin
        n := 1 ;

        writeln ('ENTER A NEGATIVE PRESSURE TO TERMINATE DATA INPUT.') ;
        writeln ;

        while TRUE do begin
            write ('ENTER PRESSURE #', n:0, ' ') ;
            readln (pressure[n]) ;
            if pressure[n] < 0.0 then begin
                n := n - 1 ;
                exit
            end ;
            n := n + 1
        end
    end ;


    procedure ProcessPressures (n                       : integer ;
                                pressure                : pressuretype ;
                                var
                                    high, low, average  : real) ;

    var
        total   :   real ;
        count   :   integer ;

    begin
        total   :=  0.0 ;
        count   :=  0 ;
        high    :=  pressure[1] ;
        low     :=  pressure[1] ;

        for count := 1 to n do begin
            total := total + pressure[count] ;
            if pressure[count] > high then
                high := pressure[count] ;
            if pressure[count] < low then
                low  := pressure[count]
        end ;

        average := total / count
    end ;


    procedure PrintSummaryResults  (n                   :   integer ;
                                    pressure            :   pressuretype ;
                                    high, low, average  :   real) ;

    var
        i   :   integer ;

    begin
        writeln('NUMBER OF INTERVALS TO MONITOR: ', n) ;
        writeln('**********************************') ;

        for i := 1 to n do
            writeln('PROCESS ', i:0, ' PRESSURE: ', pressure[i]:10:3);
        writeln ;
        if high > 5000.0 then
            writeln('DANGER! OVERPRESSURE OF ', high:0:3) ;
        if low < 14.0 then
            writeln('DANGER! VACUUM OF ', low:0:3) ;
        
        writeln('HIGH PRESSURE IS ', high:0:3) ;
        writeln('LOW PRESSURE IS ', low:0:3) ;
        writeln('AVERAGE PRESSURE IS ', average:0:3) ;
        writeln('************************************')
    end;


var
    n           :   integer ;
    pressure    :   pressuretype ;
    high,
    low,
    average     :   real ;

begin
    GetPressures (n, pressure) ;
    ProcessPressures (n, pressure, high, low, average);
    PrintSummaryResults (n, pressure, high, low, average);
end.

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Help on Pascal Program: Pressure

Re: Help on Pascal Program: Pressure