47. Aliasing Nested Namespace

#include <iostream>
using namespace std;

namespace Communication {
    namespace I2C {
        int speed = 400000; // 400 kHz
    }
}

namespace CI = Communication::I2C;
int main() {
    // your code here: create alias CI for Communication::I2C
    // your code here: print speed using CI
    cout << "I2C Speed: " << CI::speed;
    return 0;
}