hdu 2072 (set)

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set容器中元素不重复，于是set中元素个数就是单词数

# include <cstdio># include <cstring># include <algorithm># include <iostream># include <set># include <sstream>//必要的头文件using namespace std;int main(){char line[100010];string word;set<string>map;while(cin.getline(line,sizeof(line),'\n')&&line[0]!='#')//从屏幕读取一行字符并赋予line{//istringstream对象可以绑定一行字符串，然后以空格为分隔符把该行分隔开来。istringstream stream(line);map.clear();        while(stream>>word)map.insert(word);cout<<map.size()<<endl;}return 0;}

# include <cstdio># include <cstring># include <algorithm># include <iostream># include <set># include <sstream>//必要的头文件using namespace std;int main(){string word,line;set<string>map;while(getline(cin,line)&&line!="#")//从屏幕读取一行字符并赋予line{//istringstream对象可以绑定一行字符串，然后以空格为分隔符把该行分隔开来。istringstream stream(line);map.clear();        while(stream>>word)map.insert(word);cout<<map.size()<<endl;}return 0;}

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