C++ Primer 第5版--练习11.3

练习 11.3：编写你自己的单词计数程序。

#include <iostream>
#include <map>

using namespace std;

int main()
{
map<string, size_t> word_count;
string word;
while (cin >> word)
++word_count[word];
for (const auto &w : word_count)
{
cout << "\"" << w.first << "\" occurs: " << w.second
<< ((w.second > 1) ? " times" : " time") << endl;
}
return 0;
}