Sfida di programmazione: Sum of Odd Numbers

Problema

Add all odd numbers from 1 up to and including n, using a loop.

Implement sum_of_odds(n).

n: The upper limit.

Return the sum of the odd numbers from 1 through n (0 if there are none).

0 ≤ n ≤ 1,000,000

Esempio 1

Input:
n = 7

Output atteso:
expected = 16

Input:
long long n = 7;

Output atteso:
long long expected = 16;

Input:
long n = 7;

Output atteso:
long expected = 16;

1 + 3 + 5 + 7 = 16.

Esempio 2

Input:
n = 0

Output atteso:
expected = 0

Input:
long long n = 0;

Output atteso:
long long expected = 0;

Input:
long n = 0;

Output atteso:
long expected = 0;

There are no odd numbers from 1 to 0, so the sum is 0.

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