program FindDifferentNumber;
vara1, a2, a3, a4, diff: integer;
beginwriteln('Enter four numbers:');readln(a1, a2, a3, a4);
if (a1 = a2) and (a1 = a3) thendiff := a4else if (a1 = a2) and (a1 = a4) thendiff := a3else if (a1 = a3) and (a1 = a4) thendiff := a2elsediff := a1;
writeln('The different number is: ', diff);end.
program FindDifferentNumber;
var
a1, a2, a3, a4, diff: integer;
begin
writeln('Enter four numbers:');
readln(a1, a2, a3, a4);
if (a1 = a2) and (a1 = a3) then
diff := a4
else if (a1 = a2) and (a1 = a4) then
diff := a3
else if (a1 = a3) and (a1 = a4) then
diff := a2
else
diff := a1;
writeln('The different number is: ', diff);
end.