<Windows Graphics Programming Win32 GDI and DirectDraw>6.1节中有这样的描述: The Windows NT/2000 graphics engine uses signed fixed-point numbers to represent coordinates, having a 4-bit fraction part and a 28-bit signed integer part. Points with negative coo
17.9 Design a method to find the frequency of occurrences of any given word in a book. 这道题让我们找书中单词出现的频率,那么首先需要搞清楚的问题是,只需要统计一个单词,还是多个单词.如果是一个单词的话,那直接就遍历所有单词直接统计即可,如果是多个,就需要建立哈希表来建立每个单词和其出现次数之间的映射,然后再来查找即可,参见代码如下: unordered_map<string, int> make_dicti