Use a for loop please!

Create a Python function called sumOfOdds which takes one argument, an integer greater than or equal to 1, and returns the result of adding the odd integers between 1 and the value of the given argument (inclusive). This function does not print. Do not use Python's sum() function. Do not build a list. You may assume that the argument is valid. Here are some examples of how your function should behave:

>>> sumOfOdds(1)

1 >>> sumOfOdds(2)

1

>>> sumOfOdds(3)

4 >>> sumOfOdds(5)

9

>>> sumOfOdds(100)

2500