Program FILE_SO_NGUYEN;
Uses Crt;
Var i,so,code:integer;
f:file of integer;
fn,s:string;
Begin
Clrscr;
Writeln('CHUONG TRINH NHAP VA IN FILE OF INTEGER');
Writeln('-----------------------------------------------');
Write('Nhap ten tap tin:');readln(fn);
Assign(f,fn);
Rewrite(f);
Writeln('CHUONG TRINH NGUNG, KHI NHAP KHONG PHAI LA SO:');
i:=1;
Repeat
Write('So thu ',i, ' = ');readln(s);
val(s,so,code);
If (code = 0) then
Write(f,so);
i:=i+1;
Until code<>0;
Close(f);
reset(f); Readln;
Clrscr;
Writeln('FILE VUA NHAP LA:');
Writeln('----------------------------');
While not eof(f) do
Begin
read(f,i);
write(i:3);
End;
Readln;
End.
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