staticint x;inlinevoidf(void){staticint n = 1; // error: non-const static in a non-static inline functionint k = x; // error: non-static inline function accesses a static variable} 如果修改为:(1) static inline void
staticintx;inlinevoidf(void){staticintn=1;// error: non-const static in a non-static inline ...
c extern int foo(); int globvar = foo(); int bar() { static int localvar = foo(); return localvar; } $ gcc localstatic.c -c localstatic.c:2: error: initializer element is not constant localstatic.c: In function ‘bar’: localstatic.c:5: error: initializer element is not ...
使用unset(ENV{<variable>})来清除某一个环境变量,其中ENV表示环境变量标志性前缀,variable指变量名称,value则为变量值,需要注意的是设定或读取环境变量时,都通过ENV前缀来访问环境变量,读取环境变量值时,要在ENV前加$符号;但if判断是否定义时,不用加$符号。
static int localvar = foo(); return localvar; } [tsecer@Harry localstatic]$ gcc localstatic.c -c localstatic.c:2: error: initializer element is not constant localstatic.c: In function ‘bar’: localstatic.c:5: error: initializer element is not constant ...
(1) a static local variable defines its lifetime in the function as the entire source, but its scope remains the same as that of the automatic variable, and can only be used within the function defining the variable. After exiting the function, you cannot use it even though it still ...
changes its lifetime. Changing a global variable to a static variable changes its scope and limits its use. So the role of static this descriptor is different in different places. 4. Static function ... internal and external functions
}/*mainc.c: In function 'main': mainc.c:13:2: error: address of register variable 'b' requested printf("%p\n", &b);*/ 3.static 3.1 static存储类指示编译器在程序的生命周期内保持局部变量的存在,而不需要在每次它进入和离开作用域时进行创建和销毁。因此,使用 static 修饰局部变量可以在函数调...
c语言中static有何用？文件作用域。这样就可以把一个文件搞成一个类。对，C也可以面向对象。静态变量...
This function or variable has been superseded by newer library or operating system functionality. Consider usingnew_iteminstead. See online help for details. 某些程式庫函式與全域變數因為過時而被取代。 這些函式及變數可能會從後續版本的程式庫中移除。 編譯器會為這些函式發出已被取代的警告,並建議所應...