UVa 10815 安迪的第一个字典

#include<iostream>
#include<sstream>
using namespace std;

int main()
{
    string s = "12 3 4 5 6";
    cout<<s<<endl;
    int a = 1;
    stringstream os;
    os << s;        //以空格和回车键为分隔符
    while(os >> a)
        cout<<a<<endl;//输出12\n3\n4\n5\n6\n
    return 0;
}

#include<cstdio>
#include<iostream>
#include<set>
#include<sstream>
using namespace std;

set<string> dict;

int main()
{
    string s,buf;
    while(cin>>s){
        for(int i = 0;i < s.length(); i++)
            if(isalpha(s[i]))  s[i] = tolower(s[i]);
            else s[i] = ‘ ‘;
        stringstream ss(s);
        while(ss >> buf) dict.insert(buf);      //分割s，插入set，按从小到大排列
    }
    //迭代器，认识较浅，记住格式
    for(set<string>::iterator it = dict.begin();it != dict.end(); ++it)
        cout<<*it<<"\n";
    return 0;
}