57. Register Callback Counter

In embedded and firmware systems, callbacks are commonly used to react to events such as timers, interrupts, or state changes.
This task focuses on using a C++ lambda as a callback that captures and modifies local state without explicitly specifying its type.

Your task is to create a callback that increments a counter each time it is invoked.

You must follow the given constraints exactly, as they are designed to reinforce modern Embedded C++ best practices.

Task:

1. Read an integer n from input.
2. Declare an integer variable count initialized to 0.
3. Create a callback that captures count and increments it by 1 each time it is called.
4. Store the callback in a variable without writing any explicit type.
5. Call the stored callback exactly n times using the provided loop.
6. Print the final value of count.

Input Specification:

• A single integer n
• n represents how many times the callback should be invoked

Output Specification:

• Print a single integer: the final value of count after the callback has been called n times
• Output must not include extra spaces or newlines

Example

Input:

3

Output:

3

Constraints:

• 0 ≤ n ≤ 10^6
• The callback must capture count
• You must not use:
  • Function pointers
  • std::function
  • typename
  • Any explicitly written callback type
• The for loop must not be modified
• Only the callback creation and storage line may be edited
• The solution must compile using a standard C++ compiler suitable for embedded systems