1 #include <stdio.h> 2 #include <stdlib.h> 3 4 static void start(void) __attribute__ ((constructor)); 5 static void stop(void) __attribute__ ((destructor)); 6 7 int 8 main(int argc, char *argv[]) 9 { 10 printf("
1 #include <stdio.h> 2 #include <stdlib.h> 3 4 static void start(void) __attribute__ ((constructor)); 5 static void stop(void) __attribute__ ((destructor)); 6 7 int 8 main(int argc, char *argv[]) 9 { 10 printf("start == %p\n", start); 11 printf("stop == %p\n", ...
{intb;//栈chars[] ="abc";//栈char*p2;//栈char*p3 ="123456";//"123456/0"在常量区,p3在栈上。staticintc =0;//全局(静态)初始化区p1 = (char*)malloc(10); p2= (char*)malloc(20);//分配得来得10和20字节的区域就在堆区。strcpy(p1,"123456");//123456/0放在常量区,编译器可能会将它...
constructors keyed to globvar>: 95: 55 push %ebp 96: 89 e5 mov %esp,%ebp 98: 83 ec 18 sub $0x18,%esp 9b: c7 44 24 04 ff ff 00 movl $0xffff,0x4(%esp) a2: 00 a3: c7 04 24 01 00 00 00 movl $0x1,(%esp) aa: e8 c5 ff ff ff call 74 <__static_initialization_and_...
Compiler error C3961 static constructor is not supported Compiler error C3962 generic class is not supported Compiler error C3963 multi-dimensional array is not supported Compiler error C3964 jagged array is not supported Compiler error C3965 parameter array is not supported ...
A Static class will always have the static constructor and its called only once since after that its in the memory for its lifetime. A Static class can contain only static members. So all the members and functions have to be static. ...
A constructor in C# is called when a class or struct is created. Use constructors to set defaults, limit instantiation, and write flexible, easy-to-read code.
C++中的构造函数(Constructor) C++中有这么一种特殊的函数,它在类里,与类名同名,且没有返回值的一个函数,只要我们定义一个类的对象,系统就会自动调用它,进行专门的初始化对象用,而大多数情况下,因为我们没有定义构造函数,系统会默认生成一个默认形式、隐藏着的构造函数,这个构造函数的函数体是空着的,因此不具有...
#include<stdlib.h>#include<stdio.h>staticvoid__attribute__((constructor))beforeMain(void){printf("Before main...\n");}intmain(void){printf("Main!\n");return0;} 输出结果 为什么最开始执行的不是main函数?怎么和我们刚开始学习C程序时说的不一样呢?从运行结果中,我们可以看出来beforeMain是在进入...
static void __attribute((section("__TEXT,MySection" ))) myFun1(void){ print(""); } attribute((unused)) function attribute attribute((unused)) 其作用是即使没有使用这个函数,编译器也不警告。 attribute((used)) function attribute attribute((used)) 其作用是告诉编译器避免被链接器因为未用过而...