Question

Напишите программу, которая вычисляет сумму всех чётных чисел в диапазоне от 1 до n.

Answer 1

Program chik;
var s,i,n:integer;
begin
readln(n);
for i:=1 to n do
if(i mod 2=0)then s:=s+i;
writeln(s);
end.

Answer 2

Program to Calculate the Sum of Even Numbers in a Range

Here's a Python program that calculates the sum of all even numbers in a given range from 1 to n:

def calculate_sum_of_evens(n):
    sum_of_evens = 0
    for i in range(1, n+1):
        if i % 2 == 0:
            sum_of_evens += i
    return sum_of_evens

n = int(input("Enter the value of n: "))
sum_of_evens = calculate_sum_of_evens(n)
print("The sum of even numbers from 1 to", n, "is", sum_of_evens)

To use this program, you need to input the value of n, which represents the upper limit of the range. The program then calculates the sum of all even numbers from 1 to n and displays the result.

Please note that this program assumes that the input value of n is a positive integer.

Let me know if you need any further assistance!