对变量的一般赋值不能放在函数外（只有在定义全局变量时的初始化才被允许），修改如下：int a;a=9;改为 int a=9;
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When extern specifier is used with a variable declaration then no storage is allocated to that variable and it is assumed that the variable has already been defined elsewhere in the program. When we use extern specifier the variable cannot be initialized because with extern specifier variable is ...
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Compiler warning (level 1) C5033 'storage-class' is no longer a supported storage class Compiler warning (level 5, off) C5034 use of intrinsic 'intrinsic' causes function function-name to be compiled as guest code Compiler warning (level 5, off) C5035 use of feature 'feature' causes func...
storage-class-specifier: auto register static extern typedef __declspec ( extended-decl-modifier-seq ) /* Microsoft Specific */Except for __declspec, you can use only one storage-class-specifier in the declaration-specifier in a declaration. If no storage-class specification is made, declarations...
Compiler warning (level 1) C4813'function': a friend function of a local class must have been previously declared Compiler warning (level 4) C4815'object name': zero-sized array in stack object will have no elements (unless the object is an aggregate that has been aggregate initialized) ...
The variables that are declared as extern have no allocation of memory. It only has a declaration, and it intends to specify that the given variable has been declared elsewhere in the available program. An external integral type’s default initial value is going to be 0, or else it is nul...
If a name that has not been previously declared occurs in an expression and is followed by a left parenthesis, it is declared by context to be a function name, the function is assumed to return an int, and nothing is assumed about its arguments. Furthermore, if a function declaration does...
Compiler error C3701 'function': event source has no events Compiler error C3702 ATL is required for COM events Compiler error C3703 'event_handler': an event handler method must have the same storage class as the source 'event' Compiler error C3704 'member': a vararg method cannot fire ...