题目:http://7xjob4.com1.z0.glb.clouddn.com/c0d75d1818b79aa14b802f9660a055f7
本题是set的简单用法。 下面是AC代码:
#include<cstdio>
#include<cstring>
#include<string>
#include<set>
#include<sstream>
#include<iostream>
#include<algorithm>
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);
}
for(
set<string>::iterator it=dict.begin();it!=dict.end();it++)
{
cout<<*it<<
"\n";
}
return 0;
}
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