print("Ноль в качестве знака операции завершит работу программы")
while True:
s = input("Знак (+,-,*,/): ")
if s == '0': break
if s in ('+','-','*','/'):
x = float(input("x="))
y = float(input("y="))
if s == '+':
print("%.2f" % (x+y))
elif s == '-':
print("%.2f" % (x-y))
elif s == '*':
print("%.2f" % (x*y))
elif s == '/':
if y != 0:
print("%.2f" % (x/y))
else:
print("Деление на ноль!")
else:
print("Неверный знак операции!")
Program chisla;
uses crt;
var a,b,c : integer;
begin
Write('Введите два числа: ');
Readln(a,b);
if a>b then c:=a-b else c:=b-a;
Writeln('Разность чисел равна ',c);
end.
Var x, y: real;
begin
write('x = ');
read(x);
write('y = ');
read(y);
{1}
if (y >= x + 3) and (x <= 0) and (sqr(x + 1) + sqr(y - 2) <= sqr(2)) or
(x >= 0) and (y <= -x + 3) and (sqr(x + 1) + sqr(y - 2) <= sqr(2)) then
writeln('1: YES')
else
writeln('1: NO');
{2}
if (y <= 2) and (y >= 0) and (sqr(x - 3) + sqr(y) >= sqr(1)) or
(y <= 0) and (sqr(x - 3) + sqr(y) <= sqr(1)) then
writeln('2: YES')
else
writeln('2: NO');
{3}
if (y >= 0) and (y <= x + 1) and (y <= -x + 2) or
(y >= 0) and (y <= x - 2) then
writeln('3: YES')
else
writeln('3: NO');
{4}
if (sqr(x - 2) + sqr(y) >= sqr(1)) and (sqr(x - 2) + sqr(y) <= sqr(2)) and
((x - 2) * y >= 0) then
writeln('4: YES')
else
writeln('4: NO');
{5}
if (sqr(x) + sqr(y) <= sqr(2)) and ((y <= x - 2) or (y >= x + 2)) then
writeln('5: YES')
else
writeln('5: NO');
{6}
if (sqr(x - 2) + sqr(y - 2) >= sqr(1)) and (y <= x + 2) and
(y >= -x + 2) and (y >= x - 2) and (y <= -x + 6) then
writeln('6: YES')
else
writeln('6: NO');
{7}
if (y <= 2) and (y >= -2) and (sqr(x) + sqr(y) >= sqr(1)) and
(sqr(x - 2) + sqr(y) >= sqr(1)) and (sqr(x - 2) + sqr(y) >= sqr(1)) then
writeln('7: YES')
else
writeln('7: NO');
{8}
if (sqr(x - 2) + sqr(y) <= sqr(2)) and (sqr(x - 2) + sqr(y) >= sqr(1)) and
(sqr(x - 2) + sqr(y + 2) <= sqr(2)) then
writeln('8: YES')
else
writeln('8: NO');
{9}
if (y <= 3) and (y >= 0) and (y >= x) and (y >= -x + 3) or
(y <= 3) and (y >= 0) and (y <= x) and (y <= -x + 3) then
writeln('9: YES')
else
writeln('9: NO');
{10}
if ((sqr(x - 3) + sqr(y) <= sqr(2)) and (sqr(x - 3) + sqr(y) >= sqr(1)) or
(sqr(x - 3) + sqr(y) <= sqr(4)) and (sqr(x - 3) + sqr(y) >= sqr(3))) and
(y >= 0) then
writeln('10: YES')
else
writeln('10: NO');
{11}
if (y <= 2) and (y >= -2) and (x >= -2) and (x <= 2) and
(sqr(x - 2) + sqr(y - 2) >= sqr(1)) then
writeln('11: YES')
else
writeln('11: NO');
{12}
if (y <= 3) and (y >= 1) and (x >= 1) and (x <= 5) and
(sqr(x - 3) + sqr(y - 2) >= sqr(1)) then
writeln('12: YES')
else
writeln('12: NO');
{13}
if (y <= 0) and (y >= -3) and (x >= -1) and (x <= 1) or
(y <= x + 2) and (y <= -x + 2) and (y >= 0) then
writeln('13: YES')
else
writeln('13: NO');
<span>end.
Последние 3, я думаю, можно оставить Вам)</span>
#include <iostream>
using namespace std;
int main()
{
int a;
cin>>a;
a=100*(a /100)+10*(a %10)+((a % 100) /10);
cout<<a<<endl;
return 0;
}