blocks|key|1301693|text|puts比printf简单，但要注意前者会自动附加一个换行符。如果这不是您想要的，您可以将字符串fputs到stdout或使用printf。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1301694|entityMap^0|0|4|5|6|1C|5|1R|6|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|G|$]]

<code>puts</code> is simpler than <code>printf</code> but be aware that the former automatically appends a newline. If that's not what you want, you can <code>fputs</code> your string to stdout or use <code>printf</code>.

blocks|key|1301787|text|printf()函数用于将字符串和变量打印到屏幕上，而put()函数只允许您将字符串打印到屏幕上。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1301788|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

the printf() function is used to print both strings and variables to the screen while the puts() function only permits you to print a string only to your screen.

blocks|key|1301864|text|除了格式化之外，如果成功，puts将返回一个非负整数；如果不成功，则返回EOF；而printf将返回打印的字符数(不包括尾随的null)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1301865|entityMap^0|D|4|10|3|15|6|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

Besides formatting, <code>puts</code> returns a nonnegative integer if successful or <code>EOF</code> if unsuccessful; while <code>printf</code> returns the number of characters printed (not including the trailing null).

blocks|key|1086741|text|在简单的情况下，编译器将对printf()的调用转换为对puts()的调用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1086742|例如，下面的代码将被编译成我下面展示的汇编代码。|1086743|#include+<stdio.h>
main()+{
++++printf("Hello+world!");
++++return+0;
}|code-block|syntax|javascript|1086744|push+rbp
mov+rbp,rsp
mov+edi,str.Helloworld!
call+dword+imp.puts
mov+eax,0x0
pop+rbp
ret|1086745|在本例中，我使用了GCC+4.7.2版，并用gcc+-o+hello+hello.c编译了源代码。|1086746|entityMap^0|D|8|S|6|0|0|0|0|M|K|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|J|7|Z|8|@]|D|@]|E|$K|L]]|$1|O|3|P|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|R|$]]

In simple cases, the compiler converts calls to <code>printf()</code> to calls to <code>puts()</code>.

For example, the following code will be compiled to the assembly code I show next.

<pre><code>#include &lt;stdio.h&gt;
main() {
 printf("Hello world!");
 return 0;
}
</code></pre>



<pre><code>push rbp
mov rbp,rsp
mov edi,str.Helloworld!
call dword imp.puts
mov eax,0x0
pop rbp
ret
</code></pre>

In this example, I used GCC version 4.7.2 and compiled the source with <code>gcc -o hello hello.c</code>.

blocks|key|1086797|text|当比较puts()和printf()时，即使它们的内存消耗几乎相同，puts()也比printf()花费更多的时间。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1086798|entityMap^0|3|6|A|8|Y|6|16|8|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|G|$]]

When comparing <code>puts()</code> and <code>printf()</code>, even though their memory consumption is almost the same, <code>puts()</code> takes more time compared to <code>printf()</code>.

blocks|key|1302031|text|puts是一个简单的选择，它在末尾添加一个新行，然后printf从一个格式化的字符串写入输出。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1302032|请参阅puts和printf的文档。|1302033|我建议只使用printf，因为这比切换方法更一致，也就是说，如果你正在清除错误，搜索所有的printfs比搜索puts和printf要容易得多。大多数情况下，您还希望在打印输出中输出一个变量，因此puts主要用于示例代码。|1302034|entityMap|0|LINK|mutability|MUTABLE|url|http://linux.die.net/man/3/puts|1|http://linux.die.net/man/3/printf^0|0|4|Q|6|0|3|4|8|6|3|4|0|8|6|1|0|6|6|1J|4|1O|6|2Q|4|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@$9|13|A|14|1|15]|$9|16|A|17|1|18]]|E|$]]|$1|H|3|I|5|6|7|19|8|@$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]|$9|1E|A|1F|B|C]|$9|1G|A|1H|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|1I|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]|R|$5|M|N|O|E|$P|S]]]]

<code>puts</code> is the simple choice and adds a new line in the end and <code>printf</code>writes the output from a formatted string.

See the documentation for <a href="http://linux.die.net/man/3/puts" rel="nofollow noreferrer"><code>puts</code></a> 
and for <a href="http://linux.die.net/man/3/printf" rel="nofollow noreferrer"><code>printf</code></a>. 

I would recommend to use only <code>printf</code> as this is more consistent than switching method, i.e if you are debbugging it is less painfull to search all printfs than <code>puts</code> and <code>printf</code>. Most times you want to output a variable in your printouts as well, so <code>puts</code> is mostly used in example code.

I know you can print with <code>printf()</code> and <code>puts()</code>. I can also see that <code>printf()</code> allows you to interpolate variables and do formatting.

Is <code>puts()</code> merely a primitive version of <code>printf()</code>. Should it be used for every possible <code>printf()</code> without string interpolation?

What is the difference between printf() and puts() in C?

我知道你可以用printf()和puts()打印。我还可以看到，printf()允许您对变量进行插值和格式化。puts()仅仅是printf()的原始版本吗？是否应该在没有字符串插值的情况下将其用于所有可能的printf()？

问在C中printf()和put()有什么区别？
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