работа с базой записей, поиск удаление Опции

[and 1]

Посмотрите пожалуйста, что не так. (иногда может выбить ошибку 200, но это неважно). В меню записываются фамилии, успешно добавляется, но когда выбираешь показать все записи (не сортировать, по фамилии...) экран пуст. Может что-то неправильно в процедуре Writephone. Или они попросту не сохраняются?

program Phonebook;
uses Crt;
type Phone = record
 SurnameS : string[15];
 NameS : string[15];
 PhoneS : string[15];
 AddressS: string[50];
 end;
var PhoneF : file of Phone;
PhoneR : Phone;
filename : string;
a : array[1..600] of Phone;
procedure WritePhone;
begin
Assign(PhoneF,filename);
Reset(PhoneF);
ClrScr;
writeln('Vse zapisi: ');
writeln;
while not Eof(PhoneF) do
begin
PhoneR.SurnameS:=' ';
PhoneR.NameS:=' ';
PhoneR.PhoneS:=' ';
PhoneR.AddressS:=' ';
read(PhoneF,PhoneR);
writeln;
write(' ',PhoneR.SurnameS);
write(' ',PhoneR.NameS);
write(' ',PhoneR.PhoneS);
write(' ',PhoneR.AddressS);
end;
Close(PhoneF);
writeln;
writeln;
write('Nagmite lybuy klavishu ...');
ReadKey;
end;
procedure AddPhone;
begin
Assign(PhoneF,filename);
Reset(PhoneF);
while not Eof(PhoneF) do Read(PhoneF,PhoneR);
PhoneR.SurnameS:=' ';
PhoneR.NameS:=' ';
PhoneR.PhoneS:=' ';
PhoneR.AddressS:=' ';
ClrScr;
writeln('Dobavlenie zapisi: ');
writeln;
Write('Vvedite familiy: ');
readln(PhoneR.SurnameS);
write('Vvedite imya: ');
readln(PhoneR.NameS);
write('Vvedite nomer telefona: ');
readln(PhoneR.PhoneS);
write('Vvedite adres: ');
readln(PhoneR.AddressS);
write(PhoneF,PhoneR);
Close(PhoneF);
writeln;
writeln('Zapis uspehno dobavlena v bazu !!!');
writeln;
write('Nagmite lybuy klavishu ...');
ReadKey;
end;
procedure DeletePhone;
var temp : file of Phone;
Nazv : string[15];
begin
Assign(PhoneF,filename);
Reset(PhoneF);
Assign(temp,filename);
Rewrite(temp);
PhoneR.SurnameS:=' ';
PhoneR.NameS:=' ';
PhoneR.PhoneS:=' ';
PhoneR.AddressS:=' ';
ClrScr;
writeln('Udalenie zapisi: ');
writeln;
Write('Vvedite familiy: ');
readln(Nazv);
while not Eof(PhoneF) do
begin
Read(PhoneF,PhoneR);
if PhoneR.SurnameS<>Nazv then Write(temp,PhoneR);
end;
Close(temp);
Close(PhoneF);
Erase(PhoneF);
Rename(temp,filename);
writeln;
writeln('Zapis uspehno udalena iz bazu !!!');
writeln;
write('Nagmite lybuy klavishu ...');
ReadKey;
end;
procedure EditPhone;
var Nazv : string[15];
temp : file of Phone;
begin
Assign(PhoneF,filename);
Reset(PhoneF);
Assign(temp,filename);
Rewrite(temp);
PhoneR.SurnameS:=' ';
PhoneR.NameS:=' ';
PhoneR.PhoneS:=' ';
PhoneR.AddressS:=' ';
ClrScr;
writeln('Redaktirovanie zapisi: ');
writeln;
Write('Vvedite familiy, kotoruy hotite izmenit: ');
readln(Nazv);
while not Eof(PhoneF) do
begin
PhoneR.SurnameS:=' ';
PhoneR.NameS:=' ';
PhoneR.PhoneS:=' ';
PhoneR.AddressS:=' ';
Read(PhoneF,PhoneR);
if PhoneR.SurnameS<>Nazv then Write(temp,PhoneR);
end;
writeln;
write('Vvedite novuy familiy: ');
readln(PhoneR.SurnameS);
write('Vvedite novoe imya: ');
readln(PhoneR.NameS);
write('Vvedite novyi nomer telefona: ');
readln(PhoneR.PhoneS);
write('Vveddite novyi adres: ');
readln(PhoneR.AddressS);
write(temp,PhoneR);
Close(temp);
Close(PhoneF);
Erase(PhoneF);
Rename(temp,filename);
writeln;
writeln('Zapis uspehno izmenena !!!');
writeln;
write('Nagmite lybuy klavishy ...');
ReadKey;
end;
procedure FindSurname;
var Nazv : string[15];
k : integer;
begin
k:=0;
Assign(PhoneF,filename);
Reset(PhoneF);
ClrScr;
writeln('Poisk zapisi po familii: ');
writeln;
Write('Vvedite familiy: ');
readln(Nazv);
while not Eof(PhoneF) do
begin
PhoneR.SurnameS:=' ';
PhoneR.NameS:=' ';
PhoneR.PhoneS:=' ';
PhoneR.AddressS:=' ';
read(PhoneF,PhoneR);
if PhoneR.SurnameS=Nazv then
begin
writeln;
write(' ',PhoneR.SurnameS);
write(' ',PhoneR.NameS);
write(' ',PhoneR.PhoneS);
write(' ',PhoneR.AddressS);
k:=k+1;
end;
end;
Close(PhoneF);
writeln;
writeln;
writeln('Poisk zavershen, naideno zapisei: ',k);
writeln;
write('Nagmite lybuy klavishu ...');
ReadKey;
end;
procedure FindPhone;
var Nazv : string[15];
k : integer;
begin
k:=0;
Assign(PhoneF,filename);
Reset(PhoneF);
ClrScr;
writeln('Poisk zapisi po nomeru telefona: ');
writeln;
Write('Vvedite nomer telefona: ');
readln(Nazv);
while not Eof(PhoneF) do
begin
PhoneR.SurnameS:=' ';
PhoneR.NameS:=' ';
PhoneR.PhoneS:=' ';
PhoneR.AddressS:=' ';
read(PhoneF,PhoneR);
if PhoneR.PhoneS=Nazv then
begin
writeln;
write(' ',PhoneR.SurnameS);
write(' ',PhoneR.NameS);
write(' ',PhoneR.PhoneS);
write(' ',PhoneR.AddressS);
k:=k+1;
end;
end;
Close(PhoneF);
writeln;
writeln;
writeln('Poisk zavershen, naideno zapisei: ',k);
writeln;
write('Nagmite lybuy klavishu ...');
ReadKey;
end;
procedure SortSurname;
var i,j,c: integer;
tr: Phone;
begin
c:=0;
Assign(PhoneF, filename);
Reset(PhoneF);
ClrScr;
writeln('Sortirovka po familii: ');
writeln;
while not Eof(PhoneF) do begin
inc(c,1);
read(PhoneF,a[c]);
end;
for i:=1 to c do
for j:=1 to c-1 do begin
if a[j].SurnameS>a[j+1].SurnameS then begin
 tr:=a[j+1];
 a[j+1]:=a[j];
 a[j]:=tr;
end;
end;
for i:=1 to c do begin
writeln;
write(a[i].SurnameS);
write(' ',a[i].NameS);
write(' ',a[i].PhoneS);
write(' ',a[i].AddressS);
end;
Close(PhoneF);
writeln;
writeln;
write('Nagmite lybuy klavishu ...');
ReadKey;
end;
procedure SortAddress;
var i,j,c: integer;
tr: Phone;
begin
c:=0;
Assign(PhoneF, filename);
Reset(PhoneF);
ClrScr;
writeln('Sortirovka po adresu: ');
writeln;
while not Eof(PhoneF) do begin
inc(c,1);
read(PhoneF,a[c]);
end;
for i:=1 to c do
for j:=1 to c-1 do begin
if a[j].AddressS>a[j+1].AddressS then begin
 tr:=a[j+1];
 a[j+1]:=a[j];
 a[j]:=tr;
end;
end;
for i:=1 to c do begin
writeln;
write(a[i].SurnameS);
write(' ',a[i].NameS);
write(' ',a[i].PhoneS);
write(' ',a[i].AddressS);
end;
Close(PhoneF);
writeln;
writeln;
write('Nagmite lybuy klavishu ...');
ReadKey;
end;
procedure SortPhone;
var i,j,c: integer;
tr: Phone;
begin
c:=0;
Assign(PhoneF, filename);
Reset(PhoneF);
ClrScr;
writeln('Sortirovka po nomeru telefona: ');
writeln;
while not Eof(PhoneF) do begin
inc(c,1);
read(PhoneF,a[c]);
end;
for i:=1 to c do
for j:=1 to c-1 do begin
if a[j].PhoneS>a[j+1].PhoneS then begin
 tr:=a[j+1];
 a[j+1]:=a[j];
 a[j]:=tr;
end;
end;
for i:=1 to c do begin
writeln;
write(a[i].SurnameS);
write(' ',a[i].NameS);
write(' ',a[i].PhoneS);
write(' ',a[i].AddressS);
end;
Close(PhoneF);
writeln;
writeln;
write('Nagmite lybuy klavishu ...');
ReadKey;
end;

procedure SortType;
var b: integer;
begin
repeat
 begin
 ClrScr;
 writeln('"Telefonnyi spravochnik" - meny sortirovki');
 writeln;
 writeln('1. Ne sortirovat');
 writeln('2. Sortirovat po familii');
 writeln('3. Sortirovat po adresu');
 writeln('4. Sortirovat po nomeru telefona');
 writeln('----------------------------');
 writeln('5. Vozvrat v glavnoe meny');
 writeln;
 write('Vyberite punkt meny: ');
 readln(b);
 case b of
 1 : WritePhone;
 2 : SortSurname;
 3 : SortAddress;
 4 : SortPhone;
 end;
 end;
until b=5;
end;
procedure PhoneMenu;
var b: integer;
begin
repeat
 begin
 ClrScr;
 writeln('"Telefonnyi spravochnik" - glavnoe meny');
 writeln;
 writeln('1. Pokazat vse zapisi');
 writeln('2. Dobavit zapis');
 writeln('3. Udalit zapis');
 writeln('4. Redaktirovat zapis');
 writeln('5. Poisk po familii');
 writeln('6. Poisk po nomeru telefona');
 writeln('----------------------------');
 writeln('7. Vyhod');
 writeln;
 write('Vyberite punkt meny: ');
 readln(b);
 case b of
 1 : SortType;
 2 : AddPhone;
 3 : DeletePhone;
 4 : EditPhone;
 5 : FindSurname;
 6 : FindPhone;
 end;
 end;
until b=7;
end;
begin
 ClrScr;
 PhoneMenu;
end.