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Dynamic Array Allocation:
Instead of declaring the array with an uninitialized size (int arr[n];), I used dynamic memory allocation (int* arr = new int[n];) after reading the value of n. This avoids undefined behavior.
Input Validation:
Added a check to ensure that n is a positive integer. If n is less than or equal to zero, the program will print a message and exit.
Sorting the Array:
Included a call to sort(arr, arr + n); before the binary search. This ensures the array is sorted, which is a prerequisite for binary search to work correctly.
Improved User Prompts:
Made the prompts clearer (e.g., "Enter the number of elements:" and "Enter element X:") to enhance user experience.
Clearer Search Feedback:
Changed the message when the key is not found to be more descriptive: "The number you entered is not in the array."
Memory Management:
Added delete[] arr; to free the dynamically allocated memory after it is no longer needed, preventing memory leaks.
Improved Readability:
Made minor adjustments to variable names and structure for clarity and maintainability.
These changes enhance the functionality, reliability, and user experience of your binary search implementation.