41. Resolve UART Namespaces

Your firmware project includes two different UART drivers:

• One for the bootloader
• One for the application firmware

Both drivers provide a function named send().

To avoid a name conflict, place each driver in its own nested namespace:

• Boot::UART
• App::UART

Each send() function must print a different message:

• Bootloader UART → "BOOT UART"
• Application UART → "APP UART"

In main():

• Read an integer mode
  • 1 → call Boot::UART::send()
  • 2 → call App::UART::send()

Example 1

Input:

1

Output:

BOOT UART

Example 2

Input:

2

Output:

APP UART

Constraints:

• Use nested namespaces (namespace inside namespace)
• Both functions must be named send()