1.主要是string的位操作,string的每一位都是一个char
//#include<string>
//#include <iomanip>
#include<vector>
#include <algorithm>
//#include<stack>
#include<set>
#include<queue>
#include<map>
//#include<unordered_set>
//#include<unordered_map>
//#include <sstream>
//#include "func.h"
//#include <list>
#include<stdio.h>
#include<iostream>
#include<string>
#include<memory.h>
using namespace std;
int main(void) {
string str;
cin >> str;
int sum = 0;
for (int i = 0; i < str.size(); i++)
{
sum += str[i] - '0';//直接进行各位的累加
}
string int2Str[10] = { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine" };
str = "";
string ans = "";
if (sum == 0) ans = "zero";
while (sum != 0)
{
char c = sum % 10 + '0';
str = c + str;
sum /= 10;
}
for (int i = 0; i < str.size(); i++)
{
ans += int2Str[str[i] - '0'];
if (i != str.size() - 1)
ans += " ";
}
cout << ans << endl;
return 0;
}