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| uses crt,graph;
type info=record
band:string;
album:string;
year:integer;
genre:string;
cdtype:string;
number:integer;
cost:integer;
end;
massiv=array[1..10] of info;
menu=array[1..6] of string;
Point=record{¤«п жҐ*ва* Єгаб®а*}
x,y,x1,y1:integer;
end;
{### GRAPHIC PROCEDURES ###}
procedure w_error(error:string);
begin
textbackground(4);
textcolor(0);
writeln(error);
textbackground(0);
textcolor(15);
end;
procedure readboolean(var b:boolean; s:string);
var
c:char;
begin
writeln(s,' (Y,y,N,n)');
repeat
c:=readkey;
until c in['Y','y','N','n'];
b:=c in ['Y','y'];
if b then
writeln('yes')
else
writeln('no');
end;
{end procedure readboolean}
{### FILE PROCEDURES ###}
procedure inforecord(var q:massiv; var nn:integer);
var
buff:string;
z,d:integer;
begin
repeat
write('Band: ');
readln(buff);
if length(buff)>30 then
w_error('Max simbols: 30')
else
q[nn].band:=buff;
until (length(buff)<30);
repeat
write('Album: ');
readln(buff);
if length(buff)>30 then
w_error('Max simbols: 30')
else
q[nn].album:=buff;
until (length(buff)<30);
repeat
write('Year: ');
readln(buff);
val(buff,z,d);
if(d<>0) then
w_error('Year must be number')
else
if (z<1900) or (z>2013) then
w_error('Year must be in [1900;2013]')
else
q[nn].year:=z;
until (d=0) and ( (z>=1900) and (z<=2013) );
repeat
write('Genre: ');
readln(buff);
if length(buff)>30 then
w_error('Max simbols: 30')
else
q[nn].genre:=buff;
until (length(buff)<30);
repeat
write('Type of CD: ');
readln(buff);
if length(buff)>30 then
w_error('Max simbols: 30')
else
q[nn].cdtype:=buff;
until (length(buff)<30);
repeat
write('Number: ');
readln(buff);
val(buff,z,d);
if(d<>0) then
w_error('Number must have number format')
else
if (z<0) or (z>10000) then
w_error('Cost must be in [0;10000]')
else
q[nn].number:=z;
until (d=0) and ( (z>=0) and (z<=10000) );
repeat
write('Cost: ');
readln(buff);
val(buff,z,d);
if(d<>0) then
w_error('Cost must be number')
else
if (z<0) or (z>5000) then
w_error('Cost must be in [0;5000]')
else
q[nn].cost:=z;
until (d=0) and ( (z>=0) and (z<=5000) );
end;
{end procedure inforecord}
procedure vvod(var q:massiv; var nn:integer);
var
add:boolean;
begin
nn:=1;
textcolor(15);
add:=true;
repeat
begin
inforecord(q,nn);
readboolean(add,'Add another disc?');
if add then
nn:=nn+1;
end;
until (add=false);
end;
{end procedure vvod}
procedure vivod(var q:massiv; nn:integer);
var
i:integer;
begin
textcolor(3);
gotoxy(1,1);
write('ь');
gotoxy(3,1);
write('Band');
gotoxy(20,1);
write('Album');
gotoxy(37,1);
write('Year');
gotoxy(42,1);
write('Genre');
gotoxy(55,1);
write('CD Type');
gotoxy(65,1);
write('Number');
gotoxy(76,1);
writeln('Cost');
writeln('--------------------------------------------------------------------------------');
for i:=1 to nn do
begin
gotoxy(1,i+2);
write(i);
gotoxy(3,i+2);
write(q[i].band);
gotoxy(20,i+2);
write(q[i].album);
gotoxy(37,i+2);
write(q[i].year);
gotoxy(42,i+2);
write(q[i].genre);
gotoxy(55,i+2);
write(q[i].cdtype);
gotoxy(65,i+2);
write(q[i].number);
gotoxy(76,i+2);
writeln(q[i].cost);
end;
textcolor(15);
end;
{end procedure vivod}
procedure writetofile(var q:massiv; nn:integer;from:string);
var
f:file of info;
n,i:integer;
error:word;
begin
clrscr;
gotoxy(1,1);
textcolor(4);
if (from='menu') then
begin
vvod(q,n); nn:=n;
end;
{$I-}
assign(f,'base.dat');
rewrite(f);
{$I+}
error:=ioresult;
if error<>0 then
begin
w_error('Error of creating file. ь');write(error);
exit;
end;
for i:=1 to nn do
{$I-}
write(f,q[i]);
{$I+}
error:=ioresult;
if error<>0 then
begin
w_error('Error of writing file. ь');write(error);
exit;
end;
{$I-}
close(f);
{$I+}
error:=ioresult;
if error<>0 then
begin
w_error('Error of closing file. ь');write(error);
exit;
end;
textcolor(15);
end;
{end procedure writetofile}
procedure readfromfile(var q:massiv; var nn:integer;from:string);
var
f:file of info;
i:integer;
error:word;
begin
clrscr;
gotoxy(1,1);
textcolor(4);
{$I-}
assign(f,'base.dat');
reset(f);
{$I+}
error:=ioresult;
if error<>0 then
begin
w_error('File base.dat does not exist. ь');write(error);
exit;
end;
i:=0;
while (not eof(f)) do
begin
inc(i);
{$I-}
read(f,q[i]);
{$I+}
error:=ioresult;
end;
if not eof(f) then
w_error('More then 10 elements in file');
if error<>0 then
begin
w_error('Error of reading file. ь');write(error);
exit;
end;
nn:=i;
{$I-}
close(f);
{$I+}
error:=ioresult;
if error<>0 then
begin
w_error('Error of closing file. ь');write(error);
exit;
end;
textcolor(15);
if (from='menu') then
begin
vivod(q,nn);
readkey;
end;
end;
{end procedure readfromfile}
procedure addrecord(var q:massiv; var nn:integer);
var
id:integer;
begin
clrscr;
gotoxy(1,1);
readfromfile(q,nn,'add');
nn:=nn+1;
inforecord(q,nn);
writetofile(q,nn,'add');
end;
{end procedure addrecord}
procedure changerecord(var q:massiv; var nn:integer);
var
id:integer;
begin
clrscr;
gotoxy(1,1);
write('Record ID: ');
readln(id);
inforecord(q,id);
writetofile(q,nn,'change');
end;
{end procedure changerecord}
procedure deleterecord(var q:massiv; var nn:integer);
var
i,id:integer;
begin
clrscr;
gotoxy(1,1);
write('Record ID: ');
readln(id);
for i:=id to nn-1 do
begin
q[id].band:=q[id+1].band;
q[id].album:=q[id+1].album;
q[id].year:=q[id+1].year;
q[id].genre:=q[id+1].genre;
q[id].cdtype:=q[id+1].cdtype;
q[id].number:=q[id+1].number;
q[id].cost:=q[id+1].cost;
end;
nn:=nn-1; {ignore last doubled record}
writetofile(q,nn,'delete');
end;
{end procedure deleterecord}
{#######################}
procedure menyu;
{ᮧ¤**ЁҐ Є*®Ї®Є, Єгаб®а*, ҐЈ® ЇҐаҐ¬ҐйҐ*ЁҐ Ё гб«®ўЁп ўлЇ®«*Ґ*Ёп Їа®жҐ¤га}
var x,y,x1,y1:integer;
i,c:byte;
a:Point; {жҐ*ва Єгаб®а*}
move:boolean;
k:char;
cd:massiv;
n:integer;
gd,gm:integer;
begin
gd:=detect;
initgraph(gd,gm,'');
{sozdanie knopok}
x:=1;y:=10;
for i:=1 to 6 do
begin
y:=10+20*(i-1);
Setcolor(i+1);
Rectangle(x,y,x+150,y+20);
Setfillstyle(1,i+1);
Bar(x,y,x+150,y+20);
end;
{nadpisi na knopkah}
Setcolor(0);
outtextxy(5,18,'Read base');
outtextxy(5,38,'Rewrite all base');
outtextxy(5,58,'Add record');
outtextxy(5,78,'Change record');
outtextxy(5,98,'Delete record');
outtextxy(5,118,'Exit');
{sozdanie i dvizenie kursora}
a.x:=138;a.y:=118;{nachalo}
move:=true;
repeat
if keypressed then
begin
k:=readkey;
if k=#80 then
begin
a.y1:=a.y;
a.x1:=a.x;
a.y:=a.y+20;
move:=true;
end;
if k=#72 then
begin
a.y1:=a.y;
a.x1:=a.x;
a.y:=a.y-20;
move:=true;
end;
if (k=#32)and (a.y=18) then
begin
restorecrtmode;
readfromfile(cd,n,'menu'); {knoka 1 + probel}
menyu;
end;
if (k=#32)and (a.y=38) then
begin
restorecrtmode;
writetofile(cd,n,'menu');
menyu;
end;
if (k=#32)and (a.y=58) then
begin
restorecrtmode;
addrecord(cd,n);
menyu;
end;
if (k=#32)and (a.y=78) then
begin
restorecrtmode;
changerecord(cd,n);
menyu;
end;
if (k=#32)and (a.y=98) then
begin
restorecrtmode;
deleterecord(cd,n);
menyu;
end;
if (k=#32)and (a.y=118) then exit;
end;
if move then
begin
if a.y1=18 then c:=2
else if a.y1=38 then c:=3
else if a.y1=58 then c:=4
else if a.y1=78 then c:=5
else if a.y1=98 then c:=6
else if a.y1=118 then c:=7
else c:=0;
Setcolor(c);
Circle(a.x1,a.y1,5);
Setfillstyle(1,c);
Fillellipse(a.x1,a.y1,5,5);
Setcolor(10);
Circle(a.x,a.y,5);
Setfillstyle(1,0);
Fillellipse(a.x,a.y,5,5);
move:=false;
end;
until k=#27;
end;
{#######################}
begin
menyu;
end. |
(
