69. Enum with Switch Dispatch

 #include <iostream>
#include <string>
using namespace std;

enum class Command { Start, Stop, Reset };

void execute(Command c) {
    switch (c) {
        case Command::Start: cout << "STARTING...";  break;
        case Command::Stop:  cout << "STOPPING...";  break;
        case Command::Reset: cout << "RESETTING..."; break;
    }
}

int main() {
    string cmd;
    cin >> cmd;

    Command c = Command::Start; // default
    
    if (cmd == "Start")      c = Command::Start;
    else if (cmd == "Stop")  c = Command::Stop;
    else if (cmd == "Reset") c = Command::Reset;

    execute(c);
    return 0;
}

 Solution Details

• The enum Command defines discrete commands: Start, Stop, Reset.
   
• The program reads a string and assigns the correct enum value.
   
• execute(Command) uses a switch to handle each case, printing the right action.
   
• This avoids long chains of if-else and makes dispatch explicit and type-safe.
  
   

Significance for Embedded Developers

• Command parsing is common in communication protocols and debug shells.
   
• Using enums ensures only valid commands are represented, avoiding invalid string/integer errors.
   
• A switch makes the dispatch logic clear and efficient.