在这里，我试图使用地图技术解决我的问题。 [英] Here I am trying to solve my problem using maps technique.

问题描述

我刚开始使用maps.t这是我试图实现的代码。当我接受输入string.it继续输入但不输出code.how我可以修改此代码，以便我可以得到我的要求结果。



我的尝试：

i just started with maps.this is the code i tried to implement.when i take input for string.it keeps taking input but doesn't output the code.how can i modify this code so that i can get my required result.

What I have tried:

#include<iostream>
#include<conio.h>
#include
#include<string>
#include<iterator>

using namespace std;

int main()
{
        map<string, int> stringCounts;
	string str;

	while (getline(cin, str)) 
          stringCounts[str]++;

	map<string, int>::iterator iter;
	for (iter = stringCounts.begin(); iter != stringCounts.end(); iter++)
	{
	cout << "word: " << iter->first << ", count: " << iter->second << endl;
	}
	_getch();
}

推荐答案

实际上你的代码（或它的编译版本）有效。

Actually your code (or a compiling version of it) works.

#include <iostream>
#include <map>
#include <string>
#include <iterator>

using namespace std;

int main()
{
  map<string, int> stringCounts;
  string str;

  while (getline(cin, str))
    stringCounts[str]++;

  map<string, int>::iterator iter;
  for (iter = stringCounts.begin(); iter != stringCounts.end(); iter++)
  {
    cout << "word: " << iter->first << ", count: " << iter->second << endl;
  }
}

样本输入：

sample input:

as
asas
asas
aa

输出

output

word: aa, count: 1
word: as, count: 1
word: asas, count: 2

[update]

使用现代 C ++编写的相同程序：

[update]
The same program written using modern C++:

#include <iostream>
#include <map>

using namespace std;

int main()
{
  map<string, int> stringCounts;
  string str;

  while (getline(cin, str))
    stringCounts[str]++;

  for (auto p : stringCounts)
    cout << "word: " << p.first << ", count: " << p.second << endl;
}

[/ update]

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