switch case

#include <iostream>
using namespace std;
int main(){
    int x;
    cin >> x;
    switch(x){
    case 61:
        cout << "Brasilia" << endl;
        break;
    case 71:
        cout << "Salvador" << endl;
        break;
    case 11:
        cout << "Sao Paulo" << endl;
        break;
    case 21:
        cout << "Rio de Janeiro" << endl;
        break;
    case 32:
        cout << "Juiz de Fora" << endl;
        break;
    case 19:
        cout << "Campinas" << endl;
        break;
    case 27:
        cout << "Vitoria" << endl;
        break;
    case 31:
        cout << "Belo Horizonte" << endl;
        break;
    default:
        cout << "DDD nao cadastrado" << endl;
        break;
    }
    return 0;
}