Write a C++ program to calculate the sum of the series 1 + 1/4 + 1/8 + ... + 1/100 using a do...while loop.

Here's a program to calculate the sum of the series $1 + \frac{1}{4} + \frac{1}{8} + \dots + \frac{1}{100}$ using a do...while loop.

Interpretation of the Series:
The series starts with 1. The subsequent terms are $\frac{1}{4}, \frac{1}{8}, \dots, \frac{1}{100}$.
We can observe a pattern in the denominators of the terms after the first one: $4, 8, \dots, 100$. These are multiples of 4.
So, the terms can be represented as $\frac{1}{4k}$, where $k$ starts from 1.
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