Topspeed_JPI/JPI-1/Pas/WORD.PAS

program word;

const
    MAX_KEY = 50;
    MAX_KEY_LEN = 10;

type
    Line = string[128];
    KeyStr = string[MAX_KEY_LEN];

var Keys : array [1..MAX_KEY] of KeyStr;
    Count : array [1..MAX_KEY] of integer;
    Filename : string[14];
    Line1 : Line;
    Num_Keys : integer;
    I : integer;
    Text_File : text;


procedure ScanLine;

var I, Ptr : integer;
    L : Line;

begin
    for I := 1 to Num_Keys do begin
        L:= Line1; (* Make working copy *)
        Ptr := Pos(Keys[I],L);
        while Ptr > 0 do begin
            Count[I] := Count[I] + 1;
            Delete(L,Ptr,1);
            Ptr := Pos(Keys[I],L);
        end;
    end;
end;


begin
    write('Enter filename ');
    readln(Filename); writeln;
    write('Enter number of keywords ');
    readln(Num_Keys); writeln;
    for I := 1 to Num_Keys do begin
        Count[I] := 0; (* Zero counters *)
        write('Enter key # ',I,'  ');
        readln(Keys[I]); writeln;
    end;
    writeln; writeln; writeln;
    Assign(Text_File,Filename);
    {$I-}
    Reset(Text_File);
    {$I+}
    while NOT Eof(Text_File) do begin
        readln(Text_File, Line1);
        writeln(Line1);
        ScanLine
    end;
    Close(Text_File);
    writeln;
    for I := 1 to Num_Keys do
        writeln(Keys[I],' counts ',Count[I],' times');
end.