TEX Quotes

                                                                           TEX Quotes
         Time Limit:3000MS    Memory Limit:0KB    64bit IO Format:%lld & %llu

Description

TeX is a typesetting language developed by Donald Knuth. It takes source text together with a few typesetting instructions and produces, one hopes, a beautiful document. Beautiful documents use `` and " to delimit quotations, rather than the mundane " which is what is provided by most keyboards. Keyboards typically do not have an oriented double-quote, but they do have a left-single-quote ` and a right-single-quote '. Check your keyboard now to locate the left-single-quote key ` (sometimes called the ``backquote key") and the right-single-quote key ' (sometimes called the ``apostrophe" or just ``quote"). Be careful not to confuse the left-single-quote ` with the ``backslash" key \. TeX lets the user type two left-single-quotes `` to create a left-double-quote `` and two right-single-quotes '' to create a right-double-quote ''. Most typists, however, are accustomed to delimiting their quotations with the un-oriented double-quote ".

If the source contained

"To be or not to be," quoth the bard, "that is the question."

then the typeset document produced by TeX would not contain the desired form:

``To be or not to be," quoth the bard, ``that is the question."

In order to produce the desired form, the source file must contain the sequence:

``To be or not to be,'' quoth the bard, ``that is the question.''

You are to write a program which converts text containing double-quote (") characters into text that is identical except that double-quotes have been replaced by the two-character sequences required by TeX for delimiting quotations with oriented double-quotes. The double-quote (") characters should be replaced appropriately by either `` if the " opens a quotation and by '' if the " closes a quotation. Notice that the question of nested quotations does not arise: The first " must be replaced by ``, the next by '', the next by ``, the next by '', the next by ``, the next by '', and so on.


Input

Input will consist of several lines of text containing an even number of double-quote (") characters. Input is ended with an end-of-file character.


Output

The text must be output exactly as it was input except that:

  • the first " in each pair is replaced by two ` characters: `` and
  • the second " in each pair is replaced by two ' characters: ''.


Sample Input

"To be or not to be," quoth the Bard, "that
is the question".
The programming contestant replied: "I must disagree.
To `C' or not to `C', that is The Question!"


Sample Output


``To be or not to be,'' quoth the Bard, ``that
is the question''.
The programming contestant replied: ``I must disagree.
To `C' or not to `C', that is The Question!''


题目的大概意思:在TeX中,左引号是' " ' 将其转化为' ``  ',右引号' " ' 将其转化为' ''  ';将整篇文章中的引号                                     转换后输出文章。


这道题主要是输入和判断引号,不能用scanf("%s", s);输入,这样输入是要读取空格的,而且不知道文章中有多少空格,直接输入全部TeX然后再遍历判断是很费事的,因此通过单个字符的输入然后依次判断比较省时,代码的效率跟高些。


代码

#include <stdio.h>
int main()
{
    int c, t=1;
    while((c = getchar())!=EOF)
    {
        if(c == '"')
        {
            printf("%s", t ? "``" : "``" );
            t=!t;
        }
        else
            printf("%c", c);
    }
   return 0;
}













### 关于 JSX 中的引号配置与规则 在 React 或相关框架中处理 JSX 时,`jsx-quotes` 是 ESLint 的一个重要规则。此规则旨在确保 JSX 属性值和子元素字符串的一致性和可读性。 #### 单引号 vs 双引号 通常情况下,在 JavaScript 和 JSX 中可以自由选择单引号 (`'`) 或双引号 (`"`)[^2]。然而为了保持一致性并遵循社区的最佳实践,建议在整个项目中统一使用一种风格: ```javascript // 推荐做法:始终使用双引号表示 JSX 属性 const element = ( <div className="greeting"> Hello world! </div> ); ``` 对于属性值而言,默认推荐采用双引号来包裹它们。这不仅提高了代码的清晰度,还减少了混淆的可能性——尤其是在 HTML 文档上下文中工作的时候。 如果遇到需要嵌套的情况,则可以根据内部字符串所使用的引号类型灵活调整外部引号的选择: ```javascript // 当属性值本身含有单引号时,使用双引号包围整个属性值 <img alt="O'Reilly's book cover" src={imageUrl} /> // 同理,当属性值内含双引号时,改用单引号 <a href='https://example.com/"quoted-url"' title='Click "here"'>Link</a> ``` 值得注意的是,某些工具链(如 Babel 编译器)能够自动转换源码中的引号形式以满足特定需求。 #### 配置 `eslint-plugin-react` 插件下的 `jsx-quotes` 规则 要强制执行上述约定,可以在 `.eslintrc.json` 文件里添加如下设置: ```json { "rules": { "react/jsx-quotes": [ "error", "prefer-double" ] } } ``` 这段配置意味着任何违反指定引号偏好的地方都会被标记为错误,并提示开发者修正。当然也可以将 `"prefer-double"` 替换为 `"prefer-single"` 来改变偏好方向。
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