Mega Code Archive
How to write toread text files
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Title: How to write to/read text files
// Create a new text file and write some text into it
procedure NewTxt;
var
f: Textfile;
begin
AssignFile(f, 'c:\ek.txt'); {Assigns the Filename}
ReWrite(f); {Create a new file named ek.txt}
Writeln(f, 'You have written text into a .txt file');
Closefile(f); {Closes file F}
end;
// Open existing text file and append some text
procedure OpenTxt;
var
F: Textfile;
begin
AssignFile(f, 'c:\ek.txt'); {Assigns the Filename}
Append(f); {Opens the file for editing}
Writeln(f, 'You have written text into a .txt file');
Closefile(f); {Closes file F}
end;
// Open existing text file and show first line
procedure ReadTxt;
var
F: Textfile;
str: string;
begin
AssignFile(f, 'c:\ek.txt'); {Assigns the Filename}
Reset(f); {Opens the file for reading}
Readln(f, str);
ShowMessage('1. line of textfile:' + str);
Closefile(f); {Closes file F}
end;
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