var a, b, с: integer;
begin
write('Введите два числа: ');
readln(a, b);
if a < b then с := a + 1 else с := b + 1;
repeat с := с - 1
until (a mod с = 0) and (b mod с = 0);
write('NOD = ', с)
end.
//2. Алгоритм с вычитанием (цикл while)
var a, b: integer;
begin
write('a = ');
readln(a);
write('b = ');
readln(b);
while a <> b do
if a > b then
a := a - b
else
b := b - a;
writeln('NOD = ', a);
end.
begin.
writeln('a, b, c:');
readln(a,b,c);
if (a=b)and(b=c)
then writeln(3)
else if (a=b)or(a=c)or(b=c) then writeln(2)
else writeln(0);
end.
Пример:
a, b, c:
1 2 1.
2.