UVa494 - Kindergarten Counting Game-难度1

题目链接：

http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=435

                                
                                 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

27109

代码：

[cpp] view plaincopy

1. #include <iostream>  
2. #include <cstdio>  
3. #include <cctype>  
4. using namespace std;  
5.   
6. int main()  
7. {  
8. #ifdef LOCAL  
9.     freopen("f:\\input.txt", "r", stdin);  
10. #endif LOCAL  
11.     char buf[10000];  
12.     while(fgets(buf, sizeof(buf), stdin))  
13.     {  
14.         int count = 0, flag = 1;  
15.         for(int i = 0; buf[i] != 0 ; ++i)  
16.         {  
17.             if(flag && isalpha(buf[i]))  
18.             {//当flag为1并且buf[i]是字母时，count+1  
19.                 count ++;  
20.                 flag = 0;//当碰到一次字母后把flag置为0  
21.             }  
22.             if(!isalpha(buf[i]))  
23.             {  
24.                 flag = 1;//当碰到一次非字母后把falg置为1  
25.             }  
26.         }  
27.         cout << count << endl;  
28.     }  
29.     return 0;  
30. }