基础训练 数的读法

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;
}