PAT 1002 写出这个数 （20 分）

#include<iostream>
#include<string>
using namespace std;
int main()
{
    long long sum = 0;
    string trans[10] = { "ling","yi","er","san","si","wu","liu","qi","ba","jiu" };
    char ch;
    while (1) {
        ch = getchar();
        if (ch == '\n')break;
        sum += ch - '0';
    }
    string cs = to_string(sum);
    for (int i = 0; i < cs.length(); i++) {
        cout << trans[cs[i]-'0'];
        if (i != cs.length() - 1)
            cout << " ";
    }
    return 0;
}

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