UVA 494 Kindergarten Counting Game 单词统计

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

题目：

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

思路：

统计每行有多少个单词，单词应是连续的大小写字母。其他符号都视为单词间的分隔符。
用fgets读可以读空格。

代码：

#include <iostream>#include"string.h"#include"cstdio"#include"stdlib.h"#include"algorithm"using namespace std;int main(){    const int N = 1024;    char s[N];    //fgets可以读取以回车为结束的内容，读到EOF返回false结束循环    while(fgets(s,N,stdin))    {        int ans=0;        int l=strlen(s);        int i=0;        //先处理前面的其他字符，然后会到达第一个字母        while(s[i]<65||s[i]>90&&s[i]<97||s[i]>122)            {                i++;            }        for(;i<l;i++)        {            //寻找第一个非字母字符，找到即为第一个单词结束            if(s[i]<65||s[i]>90&&s[i]<97||s[i]>122)            {                ans++;            }            //跳过所有的多余符号            while(s[i]<65||s[i]>90&&s[i]<97||s[i]>122)            {                i++;            }        }        printf("%d\n",ans);    }}