PAT 乙级 1002

#include<iostream>
using namespace std;

int main()
{
string s;
cin>>s;
int a[10]={0};
for(int i=0;i<s.length();i++)
{
a[s[i]-'0']++;
}
int sum=0;
for(int i=0;i<10;i++)
{
sum+=a[i]*i;
}
//cout<<sum<<endl;
int b[10];
int i=0;
while(sum)
{
int a=sum%10;
b[i++]=a;
sum/=10;
}
for(int j=i-1;j>0;j--)
{
switch(b[j])
{
case 1: cout<<"yi"<<" ";break;
case 2: cout<<"er"<<" ";break;
case 3: cout<<"san"<<" ";break;
case 4: cout<<"si"<<" ";break;
case 5: cout<<"wu"<<" ";break;
case 6: cout<<"liu"<<" ";break;
case 7: cout<<"qi"<<" ";break;
case 8: cout<<"ba"<<" ";break;
case 9: cout<<"jiu"<<" ";break;
case 0: cout<<"ling"<<" ";break;
}
}
switch(b[0])
{
case 1: cout<<"yi";break;
case 2: cout<<"er";break;
case 3: cout<<"san";break;
case 4: cout<<"si";break;
case 5: cout<<"wu";break;
case 6: cout<<"liu";break;
case 7: cout<<"qi";break;
case 8: cout<<"ba";break;
case 9: cout<<"jiu";break;
case 0: cout<<"ling";break;
}

return 0;
}