浙大PAT甲级-1005

水题。

关键点：

-string处理（string是个数组，length函数，EOF结束...）

#include <iostream>
#include <cstring>
using namespace std;

void print(int n){
    switch(n){
        case 0:cout<<"zero";
        break;
        case 1:cout<<"one";
        break;
        case 2:cout<<"two";
        break;
        case 3:cout<<"three";
        break;
        case 4:cout<<"four";
        break;
        case 5:cout<<"five";
        break;
        case 6:cout<<"six";
        break;
        case 7:cout<<"seven";
        break;
        case 8:cout<<"eight";
        break;
        case 9:cout<<"nine";
        break;
    }
}
int main()
{
    string n;
    int sum=0;
    cin>>n;
    for(int i=0;i<n.length();i++)
        sum+=(int)n[i]-48;
    if(sum>=100){
        print(sum/100);
        cout<<" ";
        sum%=100;
        print(sum/10);
        cout<<" ";
        sum%=10;
        print(sum);
    }else if(sum>=10){
        print(sum/10);
        cout<<" ";
        sum%=10;
        print(sum);
    }else{
        print(sum);
    }
    return 0;
}