how to write c# program that will calculate for the average of positive integer inputs from 0 to n. Also determine the number of input for numbers that are greater than 10, 30, 50, 70, and 90.

To write a C# program that calculates the average of positive integer inputs from 0 to n and determines the number of inputs greater than certain thresholds, you can follow these steps:

1. Start by defining the required variables:
- `n`: The maximum value for user inputs.
- `sum`: The sum of all the positive integer inputs.
- `count`: The number of positive integer inputs greater than each threshold.
- `thresholds`: An array containing the thresholds (e.g., 10, 30, 50, 70, 90).

2. Prompt the user to enter a value for `n`.
Example: `Console.WriteLine("Enter the maximum number (n):");`

3. Read and validate the user input. Ensure that the value entered is a positive integer greater than zero.
Example: `int n = int.Parse(Console.ReadLine());`

4. Initialize the variables: `sum = 0` and `count` array elements to all be `0`.
Example: `sum = 0;` and `int[] count = new int[thresholds.Length];`

5. Start a loop to get each user input from 0 to `n`.
Example: `for (int i = 0; i <= n; i++) { ... }`

6. Inside the loop:
- Prompt the user to enter a positive integer.
- Read and validate the input to ensure it is a positive integer.
- Add the input to the `sum` variable.
- Check if the input is greater than each threshold and increment the corresponding element in the `count` array if it exceeds the threshold.
Example:
```
Console.WriteLine("Enter a positive integer:");
int input = int.Parse(Console.ReadLine());

if (input > 0) {
sum += input;

for (int j = 0; j < thresholds.Length; j++) {
if (input > thresholds[j]) {
count[j]++;
}
}
}
```

7. After the loop, calculate the average by dividing the `sum` by `n + 1`, since we started the loop from 0.
Example: `double average = (double)sum / (n + 1);`

8. Print the calculated average.
Example: `Console.WriteLine("Average: " + average);`

9. Print the counts for numbers greater than each threshold.
Example:
```
for (int k = 0; k < thresholds.Length; k++) {
Console.WriteLine("Count for numbers greater than " + thresholds[k] + ": " + count[k]);
}
```

That's it! You have now written a C# program that calculates the average of positive integer inputs and determines the count for numbers greater than specific thresholds.