Resolve UART Namespaces

#include <iostream>
using namespace std;

// Create namespace Boot with nested namespace UART
// Create namespace App  with nested namespace UART
namespace Boot{
    namespace UART{
        void send(){
            cout<<"BOOT UART";
        }
    }
}

namespace App{
    namespace UART{
        void send(){
            cout<<"APP UART";
        }
    }
}
int main() {
    int mode;
    cin >> mode;

    // Call correct send() function here
    (mode==1)?Boot::UART::send():App::UART::send();

    return 0;
}

Solving Approach