1082 Read Number in Chinese (25 分)

1082 Read Number in Chinese (25 分)
Given an integer with no more than 9 digits, you are supposed to read it in the traditional Chinese way. Output Fu first if it is negative. For example, -123456789 is read as Fu yi Yi er Qian san Bai si Shi wu Wan liu Qian qi Bai ba Shi jiu. Note: zero (ling) must be handled correctly according to the Chinese tradition. For example, 100800 is yi Shi Wan ling ba Bai.

Input Specification:
Each input file contains one test case, which gives an integer with no more than 9 digits.

Output Specification:
For each test case, print in a line the Chinese way of reading the number. The characters are separated by a space and there must be no extra space at the end of the line.

Sample Input 1:
-123456789
Sample Output 1:
Fu yi Yi er Qian san Bai si Shi wu Wan liu Qian qi Bai ba Shi jiu
Sample Input 2:
100800
Sample Output 2:
yi Shi Wan ling ba Bai

#include<iostream>
using namespace std;
string digits[10] = { "ling","yi","er","san","si","wu","liu","qi","ba","jiu" };
string units[5] = { "Yi","Wan","Qian","Bai","Shi" };
int main() {
	string s;
	cin >> s;
	if (s[0] == '-') {
		cout << "Fu ";
		s = s.substr(1, s.length() - 1);
	}
	if (s.length() == 9) {
		cout << digits[s[0] - '0'] << " " << units[0] << " ";
		s = s.substr(1, s.length() - 1);
	}
	if (s.length() <= 8&&s.length()>=5) {
		string t= s.substr(0, s.length() - 4);
		s = s.substr(s.length() - 4, 4);
		if (t == "0000") goto next;
		bool flag = false;
		for (int i = 0; i < t.length() ; i++) {
			if (t[i] == '0'&&flag==false) cout << digits[0] << " ";
			else {
				if (t[i] == '0' && flag == true) break;
 				if(t[i]!='0') cout << digits[t[i] - '0'] << " ";
				if (t.length() == 4) {
					if (i == 0 && t[1] == '0' && t[2] == '0' && t[3] == '0') {
						cout << units[2] << " ";
						flag = true;
					}
					else if(i==0)cout << units[2] << " ";
					if (i == 1 && t[2] == '0' && t[3] == '0') { 
						cout << units[3] << " "; flag = true;
					}
					else if(i==1)cout << units[3] << " ";
					if (i == 2 && t[3] == '0') { 
						cout << units[4] << " ";
						flag = true;
					}
					else if(i == 2) cout << units[4] << " ";
				}
				else if (t.length() == 3) {
					if (i == 0 && t[1] == '0' && t[2] == '0') {
						cout << units[3] << " ";
						flag = true;
					}
					else if (i == 0)cout << units[3] << " ";
					if (i == 1 && t[2] == '0') {
						cout << units[4] << " ";
						flag = true;
					}
					else if (i == 1)cout << units[4] << " ";
				}
				else if (t.length() == 2) {
					if (i == 0 && t[1] == '0') {
						cout << units[4] << " ";
						flag = true;
					}
					else if (i == 0)cout << units[4] << " ";
				}
			}
		}
		cout << units[1]<<" ";
	}
	next:
	if (s.length() <= 4 && s.length() >= 1) {
		string t = s;
		bool flag = false;
		if (t == "0") { cout << digits[0]; goto last; }
		if (t == "0000") goto last;
		if (t[0] == '0' && t[1] == '0' && t[2] == '0') {
			cout << digits[0] << " " << digits[t[3] - '0']; goto last;
		}
		for (int i = 0; i < t.length() ; i++) {
			if (t[i] == '0' && flag == false) cout << digits[0] << " ";
			else {
				if (t[i] == '0' && flag == true) break; 
				if (t[i] != '0' && i != t.length() - 1) cout << digits[t[i] - '0'] << " ";
				else cout << digits[t[i] - '0'];
				if (t.length() == 4) {
					if (i == 0 && t[1] == '0' && t[2] == '0' && t[3] == '0') {
						cout << units[2];
						flag = true;
					}
					else if (i == 0)cout << units[2] << " ";
					if (i == 1 && t[2] == '0' && t[3] == '0') {
						cout << units[3]; flag = true;
					}
					else if (i == 1)cout << units[3] << " ";
					if (i == 2 && t[3] == '0') {
						cout << units[4];
						flag = true;
					}
					else if (i == 2) cout << units[4] << " ";
				}
				else if (t.length() == 3) {
					if (i == 0 && t[1] == '0' && t[2] == '0') {
						cout << units[3];
						flag = true;
					}
					else if (i == 0)cout << units[3] << " ";
					if (i == 1 && t[2] == '0') {
						cout << units[4];
						flag = true;
					}
					else if (i == 1)cout << units[4] << " ";
				}
				else if (t.length() == 2) {
					if (i == 0 && t[1] == '0') {
						cout << units[4];
						flag = true;
					}
					else if (i == 0)cout << units[4] << " ";
				}
			}
		}
	}
	last:
	return 0;
}