c++ - vector 循环未到达所有元素

Question

我有以下一段代码，它接收一些单词，将它们存储到一个 vector 中，对它们进行排序，然后计算每个单词出现的次数并将其输出:

typedef vector<double>::size_type vec_sz;
vector<string> words;

string c;

cout << "Enter some words!" << endl << endl;
while (cin >> c) {
    words.push_back(c);
}

vec_sz size = words.size();
sort(words.begin(), words.end());

string current_word = words[0];
int count = 1;

for (int i = 1; i < size; i++) {
    if (words[i] == current_word) {
        count++;
    }
    else {
        cout << "The word " + current_word + " appears " << count << " times." << endl;
        current_word = words[i];
        count = 1;
    }
}

我输入一些词:

word
word
lol
hello
lol
word
hello
^Z

然后我得到以下输出:

The word hello appears 2 times.
The word lol appears 2 times.

但它永远不会到达最终的单词集。我将循环更改为只打印出 vector 中的每个元素，它确实打印出了所有元素。但出于某种原因，这个循环不想到达最终的单词集。出了什么问题？

Answer 1

这里是最后一句话:

else {
    // Previous word printed
    cout << "The word " + current_word + " appears " << count << " times." << endl;
    // current_word set to last word
    current_word = words[i];
    count = 1;
}

然后循环退出。因此，您需要在循环外添加最后一行来打印最后一个单词及其计数。