[解题报告]494 - Kindergarten Counting Game

 Kindergarten Counting Game 

Everybody sit down in a circle. Ok. Listen to me carefully.

``Woooooo, you scwewy wabbit!''

Now, could someone tell me how many words I just said?

 

Input and Output

Input to your program will consist of a series of lines, each line containing multiple words (at least one). A ``word'' is defined as a consecutive sequence of letters (upper and/or lower case).

 

Your program should output a word count for each line of input. Each word count should be printed on a separate line.

 

Sample Input

 

Meep Meep!
I tot I taw a putty tat.
I did! I did! I did taw a putty tat.
Shsssssssssh ... I am hunting wabbits. Heh Heh Heh Heh ...

 

Sample Output

 

2
7
10
9





还是要动点小脑筋的，关键是如何识别是否是单词，其实也简单，统计字母与非字母的交接点就可以了
用WORD这个变量控制，输入单词的第一个字母后，单词总数加一，word归零，这样后面连续输入的字母便不算单词。
而当有非字母型字符出现时，说明上一个单词结束了，下面第一个出现的字母便算是单词，所以WORD变一

#include<stdio.h>
int main()
{
    char ch;
    int word=1,count=0;
    while((ch=getchar())!=EOF)
    {
        if((ch>='A'&&ch<='Z')||(ch>='a'&&ch<='z'))
        {
            if(word==1)  //统计完一个单词后，WORD归零
            {
                count++;
                word=0;
            }
        }
        else if(ch=='\n')  //处理新一组数据，WORD变一
        {
            printf("%d\n",count);
            count=0;
            word=1;
        }
        else word=1;   //输入非字母时，如符号，空格等，WORD变一
    }
    return 0;
}