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Problem 001——Tex Quotes

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Problem 001
 TeX Quotes
 

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which converts text containing double-quote (") characters into text that is identical except that double-quotes have been replaced by the two-character sequences required by TeX for delimiting quotations with oriented double-quotes.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 and Output

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. 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!‘‘

CODE
#include
int main()
{
    char a;
    long int i=1;
    while((a=getchar())!=EOF)
    {
        if(a==‘"‘&&i%2==1)
        {
            printf("``");
            i++;
        }
        else if(a==‘"‘&&i%2==0)
        {
            printf("‘‘");
            i++;
        }
        if(a!=‘"‘)
            printf("%c",a);

    }
    return 0;
}


MY WAY
    这个是第一个题,首先应该做的是用EOF,这个比较简单。程序最开始的难处是我不明白如何让让电脑获得这些输入,经过查书自学得知getchar的用法。getchar可以输入单个字符,让计算机读取。在程序的中间部分则是用来判断输入是否是引号,并且判断出是第几个引号,然后对应的输出题目所要求的符号。最后一定要加上return返回值。这样,这个题目一遍就获得了AC,这真是件令人欢欣鼓舞的事!
    后来听好多人说这个题超级水,但是我想说,没有水的题目,只有水平烂的人。只有总这样的简单的题目开始,一步一个脚印的去做,一步一步的深入program,总有一天会懂得编程的真谛。
    I‘m ACMer.I‘m on my way.

Problem 001——Tex Quotes

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原文地址:http://www.cnblogs.com/acmer-zcy/p/4061084.html

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