Дан радиус окружности . найти ее диаметр (с# )

#include < stdio.h> #include < stdlib.h> #include < conio.h> #include < math.h> int main(){  int x, y;   printf("\n vvedite x and y:   ");   scanf("%d" "%d", & x, & y);     if (x < y) printf("\n x = %d, y = %d", (x + y)/2, 2 * x * y);   else printf("\n x = %d, y = %d", 2 * x * y, (x + y)/2);   printf("\n\n to ");   getch( );   return 0; }

var

i,j,k: integer;

a,b,c: array [1..30] of integer;

begin

randomize;

j: =0;

k: =0;

for i: =1 to 30 do

begin

a[i]: =random(80)-30;

if a[i] mod 2 =0 then

begin

j: =j+1;

b[j]: =a[i]

end

end;

for i: =30 downto 1 do

if a[i]< 0 then

begin

k: =k+1;

c[k]: =a[i];

end;

for i: =1 to j do

writeln(b[i]);

for i: =1 to k do

writeln(c[i]);

end.

var i,s: integer;

begin

writeln('summa ');

for i: =100 to 999 do

if i mod 17 =0 then s: =s+i else s: =s+0;

writeln(s)

end.

20-25=-5