寒假刷题之3——小朋友来数数

原创

mb61b856e04bb98 2021-12-16 17:05:37 ©著作权

文章标签 #include 初始化 文章分类 代码人生

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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.

Input

Meep Meep!

I tot I taw a putty tat.
I did! I did! I did taw a putty tat.

Output

7
10
9

复制这些内容就够蛋疼啊。。。

就是普通的计算单词数目，以前好像写过，很快就写了一段：

#include<stdio.h>
int main()
{
  char letter;
  int i = 0;

  for (; (scanf("%c", &letter)) != EOF; letter == ' ' ? i ++ : NULL)
    letter == '\n'? (printf("%d\n", i + 1), i = 0) : NULL;

  printf("%d\n", i + 1);

  return 0;
}

传上去竟然Wrong answer了。。。

好吧我认真地看了原题目，连续的字母算一个单词，我是按空格数+1来算的。

改代码吧。。。

完全改掉代码，换思路来写，用isalpha判断第一个字符是不是字母，然后读取后面的字母直到其他字符，继续累积。

没想到还给wa了两次，都是我不小心，忘记把i初始化。

现在终于ac了，虽然不是很好的代码。。。贴出代码：

#include<stdio.h>
#include<ctype.h>
int main()
{
  char letter;
  int i = 0;

  for (; (scanf("%c", &letter)) != EOF;){
    if (isalpha(letter)){
      i ++;
      while (isalpha(letter))
      scanf("%c", &letter);
    }
    if (letter == '\n'){
      printf("%d\n", i);
      i = 0;
    }
  }

  return 0;
}