【OI】Tex Quotes——UVa 272

比眉伴天荒 2021-10-30 08:12 269阅读 0赞

题目：

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which converts text containing double-quote (") characters into text that is identical except that double-quotes have been replaced by the two-character sequences required by TEX for delimiting quotations with oriented double-quotes.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

解：

#include <stdio.h>
    
    int main()
    {
        int c,q = 1;　　// q为标志变量，为1时左引号，反之右引号
        while ((c = getchar()) != EOF)　　//一直读取一个字符直到文件末尾
        {
            if (c == '"')
            {　　
    　　　　　　　//换引号然后更换标志变量的值
    
                printf("%s",q ? "``":"''");
                q = !q;
            }
            else
            {
                printf("%c",c);
            }
        }
        return 0;
    }

[https://vjudge.net/problem/UVA-272][https_vjudge.net_problem_UVA-272]

转载于:https://www.cnblogs.com/nowonder/p/Uva272.html

[https_vjudge.net_problem_UVA-272]: https://vjudge.net/problem/UVA-272