Logic Building
# Take n as input
n = int(input("Enter n: "))
# Calculate sum of odd numbers
sum_odd = 0
for i in range(1, n + 1, 2):
sum_odd += i
print(f"Sum of odd numbers up to {n}: {sum_odd}")Output
Enter n: 10 Sum of odd numbers up to 10: 25
Sum only odd numbers using step 2.
Key Concepts:
- Start from 1 (first odd number)
- Step by 2 to get only odd numbers
- Accumulate sum