C++代码

#include <bits/stdc++.h>
using namespace std;

struct City {
    int ddd;
    string des;
} c[8];

int main() {
    c[0].ddd=61,c[0].des="Brasilia";
    c[1].ddd=71,c[1].des="Salvador";
    c[2].ddd=11,c[2].des="Sao Paulo";
    c[3].ddd=21,c[3].des="Rio de Janeiro";
    c[4].ddd=32,c[4].des="Juiz de Fora";
    c[5].ddd=19,c[5].des="Campinas";
    c[6].ddd=27,c[6].des="Vitoria";
    c[7].ddd=31,c[7].des="Belo Horizonte";

    int x;
    cin>>x;
    for(int i=0; i<x; i++) {
        if(x==c[i].ddd) {
            cout<<c[i].des<<endl;
            return 0;
        }
    }

    cout<<"DDD nao cadastrado"<<endl;

    return 0;
}

/*
in:11
out:Sao Paulo
*/