Целая часть аргумента как пишутся?
A) EXP(X) B) ABS(X) C) ATN(X) E) INT(X)

Question

Информатика: Целая часть аргумента как пишутся? A) EXP(X) B) ABS(X) C) ATN(X) E) INT(X)

vangelinna · Answer

Var used: Set of Char;
    s1, s2: string;
    i: integer;
    done: boolean;
    c: char;

function IsLetter(c: char): boolean;
begin
IsLetter := ((c >= 'a') and (c <= 'z')) or ((c >= 'A') and (c <= 'Z'));
end;

function UpperCase(c: char): char;
begin
if (c >= 'a') and (c <= 'z') then
    UpperCase := Chr(Ord(c) - Ord('a') + Ord('A'))
else
    UpperCase := c;
end;

begin
used := [];

readln(s1);
readln(s2);

for i := 1 to length(s1) do
if (IsLetter(s1[i])) then
    include(used, UpperCase(s1[i]));

for i := 1 to length(s2) do
if (IsLetter(s2[i])) then
    include(used, UpperCase(s2[i]));

done := False;
for c := 'A' to 'Z' do
if not (c in used) then
begin
    done := True;
    write(c);
end;

if not done then
write(0);

writeln;
end.