blocks|key|1809207|text|请尝试使用exit(0);。exit函数需要整数参数。还有，别忘了#include+<stdlib.h>。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1809208|entityMap|0|LINK|mutability|MUTABLE|url|http://man7.org/linux/man-pages/man3/exit.3.html^0|5|8|E|4|X|J|E|4|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@$9|U|A|V|1|W]]|E|$]]|$1|F|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

Try using <code>exit(0);</code> instead. The <a href="http://man7.org/linux/man-pages/man3/exit.3.html" rel="noreferrer"><code>exit</code></a> function expects an integer parameter. And don't forget to <code>#include &lt;stdlib.h&gt;</code>.

blocks|key|2022788|text|exit函数是在stdlib标头中声明的，因此您需要|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2022789|#include+<stdlib.h>|code-block|syntax|javascript|2022790|在您的程序的顶部，以便能够使用exit。|2022791|还要注意，exit接受一个整数参数，所以你不能像exit()那样调用它，你必须调用exit(0)或exit(42)。0通常表示程序成功完成，非零值用作错误码。|2022792|还有预定义的宏EXIT_SUCCESS和EXIT_FAILURE，例如exit(EXIT_SUCCESS);|2022793|entityMap^0|0|4|0|0|F|4|0|5|4|O|6|15|7|1D|8|0|7|C|K|C|Z|J|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]|$9|14|A|15|B|C]|$9|16|A|17|B|C]]|D|@]|E|$]]|$1|O|3|P|5|6|7|18|8|@$9|19|A|1A|B|C]|$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|R|$]]

The <code>exit</code> function is declared in the stdlib header, so you need to have

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

at the top of your program to be able to use <code>exit</code>.

Note also that <code>exit</code> takes an integer argument, so you can't call it like <code>exit()</code>, you have to call as <code>exit(0)</code> or <code>exit(42)</code>. 0 usually means your program completed successfully, and nonzero values are used as error codes.

There are also predefined macros <code>EXIT_SUCCESS</code> and <code>EXIT_FAILURE</code>, e.g. <code>exit(EXIT_SUCCESS);</code>

blocks|key|1809282|text|exit(int+code);是在stdlib.h中声明的，因此您需要一个|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1809283|#include+<stdlib.h>|code-block|syntax|javascript|1809284|另外：|1809285|你没有exit()的参数，它需要一个int，所以在这本书中提供one.Burn，它使用的goto+(除了linux内核黑客)非常糟糕，非常非常糟糕。|1809286|编辑：|1809287|哦，还有|1809288|void+main()|1809289|也是不好的，它是：|1809290|int+main(int+argc,+char+*argv[])|1809291|entityMap^0|0|F|H|8|0|0|0|3|6|I|3|18|4|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|16|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|17|8|@$9|18|A|19|B|C]|$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]]|D|@]|E|$]]|$1|O|3|P|5|6|7|1E|8|@]|D|@]|E|$]]|$1|Q|3|R|5|6|7|1F|8|@]|D|@]|E|$]]|$1|S|3|T|5|H|7|1G|8|@]|D|@]|E|$I|J]]|$1|U|3|V|5|6|7|1H|8|@]|D|@]|E|$]]|$1|W|3|X|5|H|7|1I|8|@]|D|@]|E|$I|J]]|$1|Y|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]]|Z|$]]

<code>exit(int code);</code> is declared in <code>stdlib.h</code> so you need an

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

Also: 
- You have no parameter for the <code>exit()</code>, it requires an <code>int</code> so provide one. 
- Burn this book, it uses <code>goto</code> which is (for everyone but linux kernel hackers) bad, very, very, VERY bad.

Edit: 
Oh, and

<pre><code>void main()
</code></pre>

is bad, too, it's:

<pre><code>int main(int argc, char *argv[])
</code></pre>

blocks|key|2022839|text|试试man+exit。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2022840|2022841|哦，还有：|2022842|#include+<stdlib.h>

int+main(void)+{
++/*++...++*/
++if+(error_occured)+{
++++return+(EXIT_FAILURE);
++}
++/*++...++*/
++return+(EXIT_SUCCESS);
}|code-block|syntax|javascript|2022843|entityMap|0|LINK|mutability|MUTABLE|url|http://man.openbsd.org/exit.3^0|2|8|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|D|3|-4|5|6|7|X|8|@]|9|@]|C|$]]|$1|E|3|F|5|6|7|Y|8|@]|9|@]|C|$]]|$1|G|3|H|5|I|7|Z|8|@]|9|@]|C|$J|K]]|$1|L|3|-4|5|6|7|10|8|@]|9|@]|C|$]]]|M|$N|$5|O|P|Q|C|$R|S]]]]

Try <a href="http://man.openbsd.org/exit.3" rel="nofollow noreferrer">man exit</a>.

<hr>

Oh, and:

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

int main(void) {
 /* ... */
 if (error_occured) {
 return (EXIT_FAILURE);
 }
 /* ... */
 return (EXIT_SUCCESS);
}
</code></pre>

blocks|key|1809496|text|exit()函数是一种具有不带参数的返回类型的函数。它由stdlib头文件定义。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1809497|您需要使用(+exit(0)+or+exit(EXIT_SUCCESS))、(exit(non-zero)或exit(EXIT_FAILURE)+)。|1809498|entityMap^0|0|6|0|5|W|12|F|1I|K|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|I|$]]

The <code>exit()</code> function is a type of function with a return type without an argument. It's defined by the stdlib header file.

You need to use <code>( exit(0) or exit(EXIT_SUCCESS))</code> or <code>(exit(non-zero)</code> or <code>exit(EXIT_FAILURE) )</code>.

blocks|key|2023325|text|您必须添加一行包含该头文件的#include+<stdlib.h>，并且exit必须返回一个值，因此在exit(any_integer)中分配一些整数。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2023326|entityMap^0|E|J|10|4|1F|H|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|$]]

You must add a line with <code>#include &lt;stdlib.h&gt;</code> to include that header file
and <code>exit</code> must return a value so assign some integer in <code>exit(any_integer)</code>.

blocks|key|1809970|text|除了向父进程返回退出代码之外-|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1809971|在UNIX中，我认为被忽略的一个重要方面是，在第一次调用(以相反的顺序)时的exit()所有那些函数，这些函数都是由atexit()调用注册的。|1809972|详情请参考SUSv4。|1809973|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

In addition to return an exit code to parent process - 

In UNIX, an important aspect that I think has been left out is, that exit() at first calls (in reverse order) all those functions, which were registered by atexit() call.

Please refer to SUSv4 for details.

blocks|key|1810007|text|在unix上，像操作系统一样，exit属于系统调用组。系统调用是使用户代码(您的代码)能够调用内核代码的特殊调用。因此，在将控制权交还给OS之前，exit调用会进行一些OS特定的清理操作，它会终止程序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1810008|#include+<stdlib.h>

//+example+1
int+main(int+argc,+char+*argv){
++exit(EXIT_SUCCESS);
}

//+example+2
int+main(int+argc,+char+*argv){
++return+0;
}|code-block|syntax|javascript|1810009|有些编译器会从这两个示例中给出相同的操作码，但有些不会。例如，第一个函数的操作码不会包含任何类型的堆栈定位操作码，这将包含在第二个示例中，就像其他任何函数一样。您可以编译这两个示例并反汇编它们，您将看到不同之处。|1810010|您可以从代码的任何部分使用exit，并确保进程终止。不要忘记包含整型参数。|1810011|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

on unix like operating systems exit belongs to group of system calls. system calls are special calls which enable user code (your code) to call kernel code. so exit call makes some OS specific clean-up actions before returning control to OS, it terminates the program.

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

// example 1
int main(int argc, char *argv){
 exit(EXIT_SUCCESS);
}

// example 2
int main(int argc, char *argv){
 return 0;
}
</code></pre>

Some compilers will give you the same opcode from both of these examples but some won't. For example opcode from first function will not include any kind of stack positioning opcode which will be included in the second example like for any other function. You could compile both examples and disassemble them and you will see the difference.

You can use exit from any part of your code and be sure that process terminates. Don't forget to include integer parameter.

blocks|key|1809548|text|写入头文件#include<process.h>，并用exit(0);替换exit();。这肯定可以在Turbo+C中工作；对于其他编译器，我不知道。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1809549|entityMap^0|5|J|R|8|11|7|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|$]]

Write header file <code>#include&lt;process.h&gt;</code> and replace <code>exit();</code> with <code>exit(0);</code>. This will definitely work in Turbo C; for other compilers I don't know.

blocks|key|1809666|text|糟糕的编程实践。在C编程中，使用goto函数是完全不可行的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1809667|也可以通过编写exit()函数的#include+<iostream.h>来包含头文件stdlib.h。还要记住exit()函数接受一个整型参数。如果程序成功完成，则使用exit(0)；如果程序有错误，则使用参数为任意非零值的exit(-1)或exit函数。|offset|length|style|CODE|1809668|entityMap^0|0|7|6|G|L|2D|7|35|8|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]|$D|N|E|O|F|G]|$D|P|E|Q|F|G]|$D|R|E|S|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|I|$]]

Bad programming practice. Using a goto function is a complete no no in C programming. 
Also include header file stdlib.h by writing <code>#include &lt;iostream.h&gt;</code>for using <code>exit()</code> function. Also remember that exit() function takes an integer argument . Use <code>exit(0)</code> if the program completed successfully and <code>exit(-1)</code> or exit function with any non zero value as the argument if the program has error.

blocks|key|2022868|text|在头文件中包含stdlib.h，然后在您想要退出程序的任何位置调用abort();。如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2022869|switch(varName)
{
++++case+1:+
+++++blah+blah;
++++case+2:
+++++blah+blah;
++++case+3:
+++++abort();
}|code-block|syntax|javascript|2022870|当用户输入时，开关接受它，并将其提供给调用abort函数的情况3。它将在按回车键后立即退出您的屏幕。|2022871|entityMap^0|7|8|X|8|0|0|L|5|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|N|$]]

Include <code>stdlib.h</code> in your header, and then call <code>abort();</code> in any place you want to exit your program. Like this:

<pre><code>switch(varName)
{
 case 1: 
 blah blah;
 case 2:
 blah blah;
 case 3:
 abort();
}
</code></pre>

When the user enters the switch accepts this and give it to the case 3 where you call the <code>abort</code> function. It will exit your screen immediately after hitting enter key.

blocks|key|1809749|text|使用process.h代替stdlib和iostream...它将100%25工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1809750|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|$]]

Use process.h instead of stdlib and iostream... It will work 100%.

I want to know how and when can I use the <code>exit()</code> function like the program in my book:

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

void main()
{
 int goals;
 printf("enter number of goals scored");
 scanf("%d",&amp;goals);

 if(goals&lt;=5)
 goto sos;
 else
 {
 printf("hehe");
 exit( );
 }
 sos:
 printf("to err is human");
}
</code></pre>

When I run it, it shows ERROR: call to undefined function exit().

Also, I want to know how I can create an option to close the window in which the program runs? For example, I made a menu-driven program which had several options and one of them was "exit the menu". How can I make this exit the program (i.e. close the window)?

Use of exit() function

编译器

我想知道如何以及何时可以像我书中的程序那样使用exit()函数：#include<stdio.h>void main(){ int goals; printf("enter number of goals scored"); scanf("%d",&goals); if(goals<=5) goto sos; else { print

问使用exit()函数
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回答 12

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