C语言实现输入字符统计 实现统计字符的的功能 问题提出：

从键盘读入一段文本，统计其中的英文字母、数字、空格和除此之外的其他字符个数。



问题分析：

由于输入字符的个数不确定，需构建条件循环while((c=getchar())!=EOF)，其中EOF为符号常量，用于表示文本输入结束，在PC机上通过输入Ctrl+Z组合键来输入此字符。所需数据与算法如下。

-C language input character statistics based on statistical character of function problems:

Reading from the keyboard into a text, statistics on the English letters, numbers, spaces, and in addition to other characters.

Problem analysis:

Because of the number of input characters is not identified, should build condition of circulating while ( ( C = getchar ( ) )! = EOF ), where EOF is a symbolic constant, is used to represent text input end, in the PC machine through the Ctrl+Z input key combination to input the character. Required data and the algorithm is as follows.