PAT A1005 Spell It Right

题目链接

数组解法

#include <iostream>
#include <string>
#include <sstream>
using namespace std;
string strs[]={"zero","one","two","three","four","five","six","seven","eight","nine"};

int main(){
	string s;
	cin>>s;
	int sum=0;
	int len=s.length();
	for(int i=0;i<len;i++){
		sum+=(s[i]-'0');	//转为整数
	}
	stringstream ss;
	ss<<sum;
	s=ss.str();
	len=s.length();
	for(int i=0;i<len;i++){
		if(i!=0) cout<<" ";
		cout<<strs[s[i]-'0'];//转为整数 
	}
	
	
	return 0;
}

map解法

#include <iostream>
#include <string>
#include <map>
#define ll long long
using namespace std;
map<char,string> mmap;

int main() {
	mmap['0'] = "zero"; mmap['1'] = "one"; mmap['2'] = "two";
	mmap['3'] = "three"; mmap['4'] = "four"; mmap['5'] = "five";
	mmap['6'] = "six"; mmap['7'] = "seven"; mmap['8'] = "eight";
	mmap['9'] = "nine";
	string s;
	cin >> s;
	int len = s.length();
	ll sum = 0;
	for (int i = 0; i < len; i++) {
		sum += (s[i] - '0');
	}
	string ss = to_string(sum);
	len = ss.length();
	cout << mmap[ss[0]];
	for (int i = 1; i < len;i++) {
		cout << " " << mmap[ss[i]];
	}
	return 0;
}