Here is a Python program that calculates the value of s based on t影章he given formula: python n = 9 s = 0 for i in range(1, n+1): if i % 2 == 0: s += i else: s -= i pri360问答nt("The value of s is:", s) You can run this program to get the result. This program uses a for loo育商害密素似p to iterate over the numbers from 1 to n (inclusive). If the number is even述决孩板态诉效杀, it’s added to s; if it’s odd, it’s subtracted from s. Finally, the program prints out the value of s.
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Here is a Python program that calculates the value of s based on t影章he given formula:
python
n = 9
s = 0
for i in range(1, n+1):
if i % 2 == 0:
s += i
else:
s -= i
pri360问答nt("The value of s is:", s)
You can run this program to get the result. This program uses a for loo育商害密素似p to iterate over the numbers from 1 to n (inclusive). If the number is even述决孩板态诉效杀, it’s added to s; if it’s odd, it’s subtracted from s. Finally, the program prints out the value of s.