Assign (Var f; FileName: String) , f , MSDOS, FileName. , f FileName. FileName ( ), MSDOS (CON, PRN . .) .
Assign (f, file.dat); { }
Assign (f, a: \ X.dat); { :}
Assign (f, LPT1); { }
Assign (f, ); { , , CON}
. * ? , ( ).
, , .
1.3.
. . , . , . : , . , , .
. .
, , , .. .
Type f: File Of <>.
, . , (, .), .
:
Type
Dim = Array [1..100, 1..2] of Real;
Zap = Record
x, y: Byte;
a: Dim;
End;
Df = File Of Dim;
Zf = File Of Zap;
:
Type
ff1 = File Of File Of Real;
ff2 = File Of Df;
FZapF = Record
x, y: Byte;
f: File Of Char
End;
Zap = File Of FZapF;
. :
Var Fr: File Of Real; Fd: File Of Zap;
, .
|
|
|
, , . . , , . :
Reset (f);
f , Assign . . , , , .. 0;
Rewrite (f);
, f. Rewrite . .
Close (f) . . Close .
Read (f, <. >);
<. > , , ( , File Of < >). 0. . , .
Write (f, <. >);
Read. , , , . . Readln Writeln. , .
Eof (f) Boolean: True, , False . f .
. . . . f V . , :
Reset (f); For i:= 1 to 5 do Read (f, V); Writeln(V);
|
|
|
V , , . . .
Seek (f, <N >) f. . .
FilePos (f) . Longint.
Filesize (f) . Longint.
Truncate (f) f .
1. . .
Program Task1;
Uses CRT;
Var ct: File Of Integer;
{ . Integer}
i, n, m: Integer;
Begin
Clrscr;
Assign (ct, a:\int.dat);
{ :}
Rewrite(ct); { }
Writeln( ?);
Readln(n); { }
Write(ct, n); { }
For i:= 1 To n Do { }
Begin
Readln(m); { }
Write(ct, m); { }
End;
Repeat Until keypressed; { ,
- }
Close (ct); { }
End.
2. , .
Program Task2;
Uses CRT;
Var ct: File Of Integer;
i, n, m: Integer;
Begin
Clrscr;
Assign (ct, a:\int.dat);
Reset(ct);
Read(ct, n);
{ }
Writeln( = ,n);
For i:= 1 To n Do
Begin
Read(ct, m); { }
Writeln(i, - , m); { }
End;
Repeat Until keypressed;
Close (ct);
End.
