@文心快码BaiduComateerror: 'extern' variable has an initializer 文心快码BaiduComate 1. 什么是'extern'变量以及它的常规用法extern关键字在C和C++中用于声明一个变量或函数是在其他文件或同一文件的其他部分定义的。它的主要作用是告诉编译器该变量或函数是在其他地方定义的,因此编译器在链接阶段会去寻找其定义。
extern variable has an initializer 在C语言中,extern是用于在不同的代码文件中共享变量或函数的关键字。当在一个源代码文件中声明一个extern变量时,它将被认为是在另一个文件中定义的。而当在另一个文件中定义这个变量时,需要在前面加上extern关键字,以表明它已经在另一个文件中声明过了。 extern变量通常是全局...
有可能是你调用外部变量时给变量赋值了，变量赋值应该在初始化定义的时候或者使用到变量的时候，外部引用的时候不要赋值。函数声明本身就不用extern，直接声明就行了，你这里的inlcude<stdio.h>include "a.c" //不应该这样做，includevoid msg(); //z这句就是声明，在调用别的文件里的函数时...
• C++ variable has initializer but incomplete type? • It is more efficient to use if-return-return or if-else-return? • Could not load file or assembly ... The parameter is incorrect • How do I compile the asm generated by GCC? • Visual Studio: LINK : fatal error LNK1181...
For example, if we have a variable x with an initial value of 0, then the statement x = 0 is redundant. In this case, the initializer is unnecessary because the variable already has a valid value. In other cases, a variable initializer may be necessary. This happens when the variable ...
//test_wrap.cxx (case 2): not ok//...std::vector< Test >::const_reference result;//declared in _wrap_Tests_get//... #compilation error message from case 2reference variable"result"requires an initializer Is this behavior documented somewhere?
eis a record literal where every component has an obvious type. *For instance,(1, enabled: true), but not(1, enabled: foo()). * eis a local variable that has not been promoted. *For instance,int i = 1;thenvar x = i;.
A local non-static variable of a non-class type has an undefined value before it is initialized. For example, it is incorrect to rely on an uninitialized integer to have the value0. Recommendation¶ Review the code and consider whether the variable should have an initializer or whether some...
An application has at least one possible path through its code that reads a variable before any value is assigned to it.If a variable has never been assigned a value, it holds the default value for its data type. For a reference data type, that default value is Nothing (Visual ...
A variable. Either a variable with local scope (LocalScopeVariable) or a field (Field). Import path import csharp Direct supertypes @variable Assignable Indirect supertypes @assignable @declaration @element @named_element Declaration Element