Positive Integer Mean Calculator

This project implements a statistical algorithm in C designed to process a stream of integers. It acts as a Selective Filter that ignores non-positive values and computes the arithmetic mean of the valid dataset upon termination.

📊 Algorithm Logic

The program processes input $x$ sequentially and maintains a dataset $S$ where $S = {x \mid x > 0}$.

Upon receiving the Sentinel Value ($-1$), it executes the mean calculation:

$$\mu = \frac{1}{n} \sum_{i=1}^{n} S_i$$

Where:

• $S$: The filtered array of positive integers.
• $n$: The total count of valid positive entries (index).
• $\mu$: The calculated arithmetic mean.

⚙️ Key Features

1. Stream Processing: Uses an infinite loop structure to accept dynamic input length.
2. Sentinel Termination: Stops execution gracefully when -1 is detected.
3. Data Filtering: Automatically discards negative numbers and zero from the calculation set.
4. Error Handling: Includes a check to prevent Division by Zero errors if no valid numbers are entered.

🚀 Usage

1. Compile the code:

   gcc main.c -o mean_calc

2. Run the executable:

   ./mean_calc

3. Enter integers (e.g., 10, -5, 20, 0, 30).
4. Enter -1 to finish and view the average of positive inputs (10, 20, 30 -> Average: 20.00).

---

This repository demonstrates array buffering and sentinel-controlled loops in C.