const
handsfree = false;
nmax = 10;
random_min = -50;
random_max = 50;
var
a: array[0..nmax] of real;
i, n: integer;
sum, x: real;
begin
{ввод массива}
n := nmax;
if handsfree then begin
for i := 0 to n do
begin
a[i] := random(random_max - random_min) + random_min;
write(a[i], ' ');
end
end
else begin
for i := 0 to n do
readln(a[i]);
end;
writeln();
{подсчет суммы}
write('x = ');
readln(x);
sum := a[n];
for i := n - 1 downto 0 do
sum := sum * x + a[i];
writeln('S = ', sqrt(sum));
end.
Код на C++:
#include <iostream>
#include <ctime>
using namespace std;
int main()
{
setlocale(LC_ALL, "rus");
srand(time(NULL));
int rows = 30;
int chairs = 0;
for (int i = 1, count_of_chairs = 20; i <= 30; i++, count_of_chairs += 2)
{
chairs += count_of_chairs;
}
cout << chairs << endl;
return 0;
};
Код на Python:
rows = 30
chairs = 0
count_of_chairs = 20
for i in range(1, 31, 1):
chairs += count_of_chairs
count_of_chairs += 2
print(chairs)
Объяснение:
A:integer;
Begin
A:=5;
Repeat
Write(A,' ');
A:=A+2;
Until A>=50;
End.