Nested Namespace Declaration

#include <iostream>
using namespace std;

namespace Config {
    namespace ADC { int resolution = 12; }
    namespace PWM { int frequency = 1000; }
}

int main() {
    // your code here: print resolution and frequency with their namespace paths
    printf("ADC.resolution=%d\nPWM.frequency=%d",Config::ADC::resolution,Config::PWM::frequency);
    return 0;
}