catch(...)是啥意思

2012-11-08 11:19:06 547 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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try/catch 和 Promise.catch 捕捉错误的异同及使用限制 try/catch 和 Promise.catch 捕捉错误的异同及使用限制阅读详情

都知道try catch是可以捕抓异常，但是在看某个用C++编写的调用webservice服务的时候老是跳到异常的代码里面去，catch(...)是啥意思？

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android中try catch的快捷键以及如何追加catch,高效快速！！！！在给大家快捷方式的时候，先来带大家来思考一下java中的try catch到底是干嘛的？认真听哦！我之前就说过初学者在知道了快捷方式，自动化操作的时候，更多的还是要关注这些操作原理本身，不能只注重操作，像是个没有思考的代码机器（话糙理不糙哈） Part One：try catch的基本原理 try{ //代码区 }catch(Exception e){ //异常处理 } 代码区如果有错误... 阅读详情

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X366ING 2012-11-10

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引用 2 楼 ri_aje 的回复:

捕获所有 c++ 异常，其他浮点数异常，系统异常什么的这个管不了。

学习了

Flammable_ice 2012-11-10

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感觉C++的try catch捕获异常设计的不太完整，所以只能捕获一部分异常。

引用 2 楼 ri_aje 的回复:

捕获所有 c++ 异常，其他浮点数异常，系统异常什么的这个管不了。

++ 感觉C++的try catch捕获异常设计的不太完整，所以只能捕获一部分异常。

漫步者、 2012-11-10

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捕捉异常的。

Binzo 2012-11-10

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捕捉异常。//

max_min_ 2012-11-08

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引用楼主 xf2012 的回复:

都知道try catch是可以捕抓异常，但是在看某个用C++编写的调用webservice服务的时候老是跳到异常的代码里面去，catch(...)是啥意思？

cath(...)
{
//捕获一切异常；
}
catch（something）
{
//捕获自己抛出异常
}

luciferisnotsatan 2012-11-08

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引用 2 楼 ri_aje 的回复:

捕获所有 c++ 异常，其他浮点数异常，系统异常什么的这个管不了。

ri_aje 2012-11-08

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捕获所有 c++ 异常，其他浮点数异常，系统异常什么的这个管不了。

JiMoKuangXiangQu 2012-11-08

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捕捉一切的异常.

转角天边 2012-11-08

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try...catch就是用来捕捉异常的，如果try里面的代码发生了异常，就会把异常抛到异常类，从而执行异常类对异常进行处理

赵4老师 2012-11-08

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try, catch, and throw Statements C++ Specific —> C++ exception handling uses the try, catch, and throw statements to implement exception handling. With C++ exception handling, your program can communicate unexpected events to a higher execution context that is better able to recover from such abnormal events. These exceptions are handled by code that is outside the normal flow of control. Note The Win32 structured exception-handling mechanism works with both C and C++ source files. However, it is not specifically designed for C++. You can ensure that your code is more portable by using C++ exception handling. Also, C++ exception handling is more flexible, in that it can handle exceptions of any type. For C++ programs, it is recommended that you use the C++ exception-handling mechanism (try, catch, throw) described in this topic. try-block : try compound-statement handler-list handler-list : handler handler-listopt handler : catch ( exception-declaration ) compound-statement exception-declaration : type-specifier-list declarator type-specifier-list abstract-declarator type-specifier-list ... throw-expression : throw assignment-expressionopt The compound-statement after the try clause is the guarded section of code. The throw-expression “throws” (raises) an exception. The compound-statement after the catch clause is the exception handler, and “catches” (handles) the exception thrown by the throw-expression. The exception-declaration statement indicates the type of exception the clause handles. The type can be any valid data type, including a C++ class. If the exception-declaration statement is an ellipsis (...), the catch clause handles any type of exception, including a C exception. Such a handler must be the last handler for its try-block. The operand of throw is syntactically similar to the operand of a return statement. Note Microsoft C++ does not support exception-specifications, as described in section 15.4 of the ANSI C++ draft. In addition, it does not support function-try-block described in section 15 of the ANSI C++ draft. For more information on C++ exception handling, see Exception Handling Topics (C++). For information on exception handling in general, see Exception Handling: Overview. END C++ Specific Example In the following example, the try block attempts to write the headers. The catch block then handles a specific file exception, and passes all other exceptions on to the outer block with the throw macro: // Example of the try and catch statements try { // Write the file header file.Write((LPSTR)&bmfHdr, sizeof(BITMAPFILEHEADER)); // // Write the DIB header and the bits file.WriteHuge(lpBI, dwDIBSize); } catch (CFileException* e) { ::GlobalUnlock((HGLOBAL) hDib); throw; } ::GlobalUnlock((HGLOBAL) hDib); return TRUE;

luciferisnotsatan 2012-11-08

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引用 4 楼 max_min_ 的回复:

引用楼主 xf2012 的回复:都知道try catch是可以捕抓异常，但是在看某个用C++编写的调用webservice服务的时候老是跳到异常的代码里面去，catch(...)是啥意思？ C/C++ code12345678cath(...){//捕获一切异常；}catch（something）{//捕获自己抛出异常}

顺序反了，something永远到不了

catch(...)是啥意思

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