ISO C90 forbids mixed declarations and code
我定义了一个 # define ASSERT_ARGS(a) ((void)0) 然后在函数里面使用这个宏，比如： int foo(arg) { ASSERT_ARGS(arg); int i = 0; bar(i); return 1; } 但是编译会出现 iso c90 forbids mixed declarations and code 这个宏如何定义才能绕过这个错误？ 不允许交换宏在代码中的位置，仅仅是改写这个宏，宏定义的代码必须能gcc 优化掉，比如((void)0). 这个好像有点难度，我一直没有找到方法。 ...
by zhuomingliang - C/C++ - 2010-11-17 11:03:36 阅读（16684） 回复（17）
报错：[code]E:\project\test-build-desktop-Qt_4_8_1_for_Desktop_-_MinGW__Qt_SDK____\..\..\QtProject\test\main.cpp:2: In file included from ..\..\QtProject\test\main.cpp:2: E:\project\test-build-desktop-Qt_4_8_1_for_Desktop_-_MinGW__Qt_SDK____\..\..\QtProject\test\Test.h:24: 错误:iso C++ forbids declaration of 'setA' with no type E:\project\test-build-desktop-Qt_4_8_1_for_Desktop_-_MinGW__Qt_SDK____...
qt how to get rid of the compile problem: error: iso C++ forbids casting to an array type `char qt_invoke(int, QUObject*)' Description: I have a slot which is declared in designer's Object Explorer ,as: infoDialogShow( char [] ename, char [] cname) when compilling the whole project,i got the following errors: .moc/moc_formmain.cpp: In method `bool formmain::qt_invoke(int, QUObje...
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错误指向了这一行。 extern master_info_tp* pmaster_info; 我只是声明一个外部结构体指针，这么做不行？
HP StorageWorks Autoloader 1/8在做完备份之后，更换磁带的时候，带子没有出仓，面板上的红灯亮起，显示屏上显示"ERROR! code: 90"，重启了一下机器也没有起作用。 打hp售后电话，说是机械故障，需要上门维修，有点不甘心，最后在一个论坛上看到有人这么操作 回到[HOME]面板，然后用[+]或[-]调整到[CONFIGURATION],按[ENTER]键进入，选择[RESET]；重置之后重新读盘，可问题依旧；最后没有办法，强行把仓门面板给移开，...
A type specifier of the form struct-or-union identifier { struct-declaration-list } declares the identifier to be the tag of the structure or union specified by the list. A subsequent declaration in the same or an inner scope may refer to the same type by using the tag in a specifier without the list: struct-or-union identifier 上面蓝色字体部分不太明白它的意思是怎样的struct, 可以用...
A very special rule applies to declarations of the form struct-or-union identifier; that declare a structure or union, but have no declaration list and no declarators. Even if the identifier is a structure or union tag already declared in an outer scope (Par.A.11.1), this declaration makes the identifier the tag of a new, incompletely-typed structure or union in the current scope. This ...
