The static storage-class specifiers, static and extern, can be applied to objects and functions. Table 6.1 shows where the keywords static and extern can and cannot be used.Table 6.1 Use of static and externExp
The static storage-class specifiers, static and extern, can be applied to objects and functions. The following table shows where the keywords static and extern can and cannot be used. Use of static and extern 展開資料表 Construct Can static be Used? Can extern be Used? Function declarations...
01 class X { 02 public: 03 static int fx1; 04 void inc1() 05 { 06 fx1=fx1+1; 07 } 08 }; 09 int X::fx1=10; 10 int main() { 11 //accessing static member 12 cout << X::fx1 << endl; 13 } The following command shows the symbols with extern linkage and we can find the...
stat_fn.c:12: warning: `foo2' was declared `extern' and later `static'And then I thought, maybe changing the declaration for foo2()withing foo1() to 'static void foo2(void);' would silence thewarning. Then the new file would look like this:/** stat_fn1.c **/#include void ...
The only declarations in the global namespace should be main, namespace declarations and extern "C" declarations. Advisory Rule 6.0.4 The identifier main shall not be used for a function other than the global function main. Required Rule 6.2.1 The one-definition rule shall not be vio...
extern int flag_isoc2x; /* Nonzero means that we have builtin functions, and main is an int. */ extern int flag_hosted; 30 changes: 30 additions & 0 deletions 30 gcc/c-family/c-opts.c Original file line numberDiff line numberDiff line change @@ -117,6 +117,7 @@ static void...
"goto" should jump to labels declared later in the same function Code Smell The name "main" should not be used for any function other than the global "main" function Code Smell The global namespace should only contain "main", namespace declarations, and "extern" C declarations Code Smell ...
auto,static,extern tip 在理解这三者之间的作用和区别之前,需要先来理解一个叫做存储类别标识 (Storage-class specifiers)的东西。 存储类别标识: 指定对象或函数的存储周期(Storage duratong)和连接(linkage)方式。 存储分类标识包含以下几个标识: auto -自动存储周期和我连接(automatic duration and no linkage)...
A class name whose declaration has not yet been encountered by the compiler can be used in an extern declaration. The name introduced with such a declaration cannot be used until the class declaration has been encountered. Reference Storage-Class Specifiers...
Functions that are declared as inline and that are not class member functions are given the same linkage characteristics as functions declared as static. A class name whose declaration has not yet been encountered by the compiler can be used in an extern declaration. The name introduced with such...