41. Abstract Communication Driver UART vs SPI

 Your task is to declare two pure virtual functions inside the base class CommDriver:

• send(const string& data)
• receive() → returns string
  
   

These functions will be implemented by derived classes UartDriver and SpiDriver. The program will read a driver type ("UART" or "SPI") and a message, create the correct driver, send the message, and then print what receive() returns.

Example
 Input:

UART Hello

Output:

UART SEND: Hello
UART RECV: Hello

Input:

SPI Ping

Output:

SPI SEND: Ping
SPI RECV: Ping