"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 20:58:22.879165
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class that provides a mechanism for executing functions with fallback mechanisms.

    :param primary_func: The main function to be executed.
    :type primary_func: Callable[..., Any]
    :param fallback_func: An alternative function to be executed if the primary function fails.
    :type fallback_func: Callable[..., Any] or None
    """

    def __init__(self, primary_func: Callable[..., Any], fallback_func: Callable[..., Any] = None):
        self.primary_func = primary_func
        self.fallback_func = fallback_func

    def execute(self) -> Any:
        """
        Execute the primary function. If an exception occurs during execution and a fallback function is provided,
        call the fallback function.

        :return: The result of the executed function or the fallback function, if applicable.
        :rtype: Any
        """
        try:
            return self.primary_func()
        except Exception as e:
            if self.fallback_func is not None:
                print(f"Error occurred in primary function: {str(e)}")
                return self.fallback_func()
            else:
                raise


# Example usage

def main_function() -> int:
    """
    A simple function that may fail.
    
    :return: An integer value.
    """
    # Simulate a failure
    1 / 0
    return 42


def fallback_function() -> int:
    """
    A fallback function to handle potential errors in main_function.

    :return: An integer value representing the fallback result.
    """
    print("Executing fallback function...")
    return 0


# Create an instance of FallbackExecutor with both functions
executor = FallbackExecutor(main_function, fallback_function)

# Execute the primary and fallback functions using execute()
result = executor.execute()  # This should handle the error and use the fallback function

print(f"Result: {result}")

# Output:
# Error occurred in primary function: division by zero
# Executing fallback function...
# Result: 0
```