27 lines
767 B
C++
27 lines
767 B
C++
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#include <bits/stdc++.h>
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using namespace std;
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set<string> dict;
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int main() {
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string s, b;
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while (cin >> s) {
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for (int i = 0; i < s.length(); i++) {
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if (isalpha(s[i]))//isalpha（）判断是不是英文字符
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{
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s[i] = tolower(s[i]);//将大写转换为小写
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} else
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s[i] = ' ';
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}
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stringstream ss(s);//从string对象str中读取字符，头文件#include<sstream>
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//有空格就是下一个
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while (ss >> b)
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dict.insert(b);//将b输入set中
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}
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//迭代输出
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for (set<string>::iterator p = dict.begin(); p != dict.end(); p++)//迭代器，有点像指针
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cout << *p << endl;
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return 0;
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}
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