7-0-0.cpp

Accelerated C++ 课后练习题 本人自己完成、可供参考

#include<iostream>
#include<string>

#include<map>
using namespace std;

int main()
{
	string s;
	map<string, int> counters;			//store each word and associated counter

	//read the input ,keeping of each word and how often we see it
	while(cin>>s)
	{
		if(s=="exit")
			break;
		++counters[s];
	}

	//write the words and associated counts
	for(map<string, int>::const_iterator it=counters.begin();
								it!=counters.end();++it)
		cout<<it->first<<"\t"<<it->second<<endl;

	return 0;
}