blocks|key|218943|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|218944|#include+<stdio.h>

int+main()
{
++printf("Printing+quotation+mark+\"+");
}|code-block|syntax|javascript|218945|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this:

<pre><code>#include &lt;stdio.h&gt;

int main()
{
 printf("Printing quotation mark \" ");
}
</code></pre>

blocks|key|2866466|text|没有反斜杠，特殊字符具有自然的特殊含义。它们在显示时使用反斜杠打印。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2866467|\+++-+++escape+the+next+character
"+++-+++start+or+end+of+string
’+++-+++start+or+end+a+character+constant
%25+++-+++start+a+format+specification
\\++-+++print+a+backslash
\"++-+++print+a+double+quote
\’++-+++print+a+single+quote
%25%25++-+++print+a+percent+sign|code-block|syntax|javascript|2866468|这句话|2866469|printf("++\"++");+|2866470|我会把报价打印出来。您还可以打印这些特殊字符\a、\b、\f、\n、\r、\t和\v，前面加一个(斜杠)。|2866471|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Without a backslash, special characters have a natural special meaning. With a backslash they print as they appear.

<pre><code>\ - escape the next character
" - start or end of string
’ - start or end a character constant
% - start a format specification
\\ - print a backslash
\" - print a double quote
\’ - print a single quote
%% - print a percent sign
</code></pre>

The statement 

<pre><code>printf(" \" "); 
</code></pre>

will print you the quotes.
You can also print these special characters \a, \b, \f, \n, \r, \t and
\v with a (slash) preceeding it.

blocks|key|218939|text|你必须转义引号：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|218940|printf("\"");|code-block|syntax|javascript|218941|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You have to escape the quotationmark:

<pre><code>printf("\"");
</code></pre>

blocks|key|220829|text|在C编程语言中，\用于打印一些在C中具有特殊含义的特殊字符，下面列出了这些特殊字符|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|220830|\\+-+Backslash
\'+-+Single+Quotation+Mark
\"+-+Double+Quatation+Mark
\n+-+New+line
\r+-+Carriage+Return
\t+-+Horizontal+Tab
\b+-+Backspace
\f+-+Formfeed
\a+-+Bell(beep)+sound|code-block|syntax|javascript|220831|entityMap^0|8|1|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

In the C programming language, <code>\</code> is used to print some of the special characters which have special meaning in C. Those special characters are listed below
<pre><code>\\ - Backslash
\' - Single Quotation Mark
\&quot; - Double Quatation Mark
\n - New line
\r - Carriage Return
\t - Horizontal Tab
\b - Backspace
\f - Formfeed
\a - Bell(beep) sound
</code></pre>

blocks|key|3079951|text|除了对字符进行转义之外，您还可以使用%25c格式，并使用字符文字作为引号。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3079952|printf("And+I+quote,+%25cThis+is+a+quote.%25c\n",+'"',+'"');|code-block|syntax|javascript|3079953|entityMap^0|I|2|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Besides escaping the character, you can also use the format <code>%c</code>, and use the character literal for a quotation mark.

<pre><code>printf("And I quote, %cThis is a quote.%c\n", '"', '"');
</code></pre>

blocks|key|3079931|text|您必须使用字符转义。它解决了这个先有鸡还是先有蛋的问题:如果我需要一个“来终止一个字符串文字，我该如何写它呢？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3079932|printf("this+is+a+\"quoted+string\"");|code-block|syntax|javascript|3079933|您还可以使用'\‘输入特殊符号，如"\n“、"\t”、"\a"，输入"\“本身：”\“等等。|3079934|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You have to use escaping of characters. It's a solution of this chicken-and-egg problem: how do I write a ", if I need it to terminate a string literal? So, the C creators decided to use a special character that changes treatment of the next char: 

<pre><code>printf("this is a \"quoted string\"");
</code></pre>

Also you can use '\' to input special symbols like "\n", "\t", "\a", to input '\' itself: "\\" and so on.

blocks|key|220817|text|这个也行得通：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|220818|printf("%25c\n",+printf("Here,+I+print+some+double+quotes:+"));|code-block|syntax|javascript|220819|但如果你打算在面试中使用它，请确保你能解释它的用途。|220820|编辑：在Eric+Postpischil的评论之后，这里是一个不依赖于ASCII码的版本：|offset|length|style|BOLD|220821|printf("%25c\n",+printf("%25*s",+'"',+"Printing+quotes:+"));|220822|输出不是很好，而且它仍然不是100%25可移植的(可能会破坏一些假设的编码方案)，但它应该可以在EBCDIC上工作。|220823|entityMap^0|0|0|0|0|2|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@$K|Y|L|Z|M|N]]|9|@]|A|$]]|$1|O|3|P|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

This one also works:

<pre><code>printf("%c\n", printf("Here, I print some double quotes: "));
</code></pre>

But if you plan to use it in an interview, make sure you can explain what it does.

EDIT: Following Eric Postpischil's comment, here's a version that doesn't rely on ASCII:

<pre><code>printf("%c\n", printf("%*s", '"', "Printing quotes: "));
</code></pre>

The output isn't as nice, and it still isn't 100% portable (will break on some hypothetical encoding schemes), but it should work on EBCDIC.

blocks|key|2866504|text|#include<stdio.h>
int+main(){
char+ch='"';
printf("%25c",ch);
return+0;
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2866505|输出：“|unstyled|2866506|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>#include&lt;stdio.h&gt;
int main(){
char ch='"';
printf("%c",ch);
return 0;
}
</code></pre>

Output: "

blocks|key|3080013|text|您应该像这样使用转义字符：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3080014|printf("\"");|code-block|syntax|javascript|3080015|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

you should use escape character like this: 

<pre><code>printf("\"");
</code></pre>

In an interview I was asked

<blockquote>
 Print a quotation mark using the <code>printf()</code> function
</blockquote>

I was overwhelmed. Even in their office there was a computer and they told me to try it. I tried like this:

<pre><code>void main()
{
 printf("Printing quotation mark " ");
}
</code></pre>

but as I suspected it doesn't compile. When the compiler gets the first <code>"</code> it thinks it is the end of string, which is not. So how can I achieve this?

How can I print a quotation mark in C?

编译器

在一次面试中，我被问到使用printf()函数打印引号我不知所措。甚至在他们的办公室里也有一台电脑，他们让我试一试。我试过这样做：void main(){    printf("Printing quotation mark " ");}但正如我怀疑的那样，它不能编译。当编译器获得第一个"时，它会认为它是字符串的结尾，但事实并非如此。那么我如何才能做到这一点呢？

问如何在C中打印引号？
EN

回答 9

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何在C中打印引号？EN

回答 9

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何在C中打印引号？
EN