zoj 2971 Give Me the Number

so call字符串处理？

#include <iostream>
#include <map>
#include <sstream>
#include <string>
#include <cstdio>
using namespace std;
map<string, int> num;
string line;
string s;

void init() {
	num.insert(make_pair("zero", 0));
	num.insert(make_pair("one", 1));
	num.insert(make_pair("two", 2));
	num.insert(make_pair("three", 3));
	num.insert(make_pair("four", 4));
	num.insert(make_pair("five", 5));
	num.insert(make_pair("six", 6));
	num.insert(make_pair("seven", 7));
	num.insert(make_pair("eight", 8));
	num.insert(make_pair("nine", 9));
	num.insert(make_pair("ten", 10));
	num.insert(make_pair("eleven", 11));
	num.insert(make_pair("twelve", 12));
	num.insert(make_pair("thirteen", 13));
	num.insert(make_pair("fourteen", 14));
	num.insert(make_pair("fifteen", 15));
	num.insert(make_pair("sixteen", 16));
	num.insert(make_pair("seventeen", 17));
	num.insert(make_pair("eighteen", 18));
	num.insert(make_pair("nineteen", 19));
	num.insert(make_pair("twenty", 20));
	num.insert(make_pair("thirty", 30));
	num.insert(make_pair("forty", 40));
	num.insert(make_pair("fifty", 50));
	num.insert(make_pair("sixty", 60));
	num.insert(make_pair("seventy", 70));
	num.insert(make_pair("eighty", 80));
	num.insert(make_pair("ninety", 90));
}
int main() {
	//freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
	init();
	int t;
	cin >> t;
	getline(cin, line);
	while(t--) {
		int ans = 0;
		int a = 0;
		getline(cin, line);
		//if(line == "zero") {
		//	cout << 0 << endl;
		//	continue;
		//}
		istringstream stream(line);
		while(stream >> s) {
			a = num[s];
			while(stream >> s) {
				if(s == "and") continue;
				if(s == "hundred") {
					a *= 100;
					continue;
				}
				if(s == "million") {
					ans = a * 1000000;
					a = 0;
					break;
				}
				if(s == "thousand") {
					ans += a * 1000;
					a = 0;
					break;
				}
				a += num[s];
			}
		}
		ans += a;
		/*int tmp1 = ans / 1000000;
		ans %= 1000000;
		int tmp2 = ans / 1000;
		ans %= 1000;
		if(tmp1 != 0)
			printf("%d,%03d,%03d/n", tmp1, tmp2, ans);
		else if(tmp2 != 0)
			printf("%d,%03d/n", tmp2, ans);
		else */printf("%d/n", ans);
	}
	return 0;
}