发现没有题解,我来水一篇题解…

#include <iostream>
#include <cstring>
#include <algorithm>

using namespace std;

string table[10] = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};

int main()
{
    string a;
    cin >> a;
    if(a == "0") //特判,不然遇到0会段错误
    {
        cout << "zero";
        return 0;
    }
    long long sum = 0;
    int ans[10000];
    int len = a.length();
    for (int j = 0; j < len; j++)
    {
        sum += (a[j] - '0');
    }
    int i = 0;
    while(sum)
    {
        ans[i] = sum % 10;
        sum /= 10;
        i++;
    }
    i--;
    while(i)
    {
        cout << table[ans[i]] << " ";
        i--;
    }
    cout << table[ans[i]]; //末尾不能有空格
    return 0;
}