试题 基础练习 数的读法

#include<iostream>
#include<string.h>
#include<vector>
using namespace std;
string p[]= {"ling", "yi", "er", "san", "si", "wu", "liu", "qi", "ba",
             "jiu", "shi", "bai", "qian", "wan"
            };
int main() {
  string s, str1, str2, str3, ans;
  cin>>s;
  int cnt=s.size();
  for(int i=0; i<s.size(); i++, cnt--) {
    if(s[i]!='0') {
      if(i-1>=0&&s[i-1]=='0')
        ans=ans+p[0]+" ";
      ans=ans+p[s[i]-'0']+" ";
      switch(cnt%4) {
        case 0:
          ans+="qian ";
          break;
        case 3:
          ans+="bai ";
          break;
        case 2:
          ans+="shi ";
          break;
        default:
          break;
      }
    }
    switch(cnt) {
      case 9:
        ans+="yi ";
        break;
      case 5:
        ans+="wan ";
        break;
      default:
        break;
    }
  }
  if(ans.substr(0, 6)=="yi shi")
    ans=ans.substr(3, ans.size()-1);
  cout<<ans<<endl;
  return 0;
}