| <typedef-name> <struct-or-union-specifier> ::= <struct-or-union> <identifier> "{" {<struct-declaration>}+ "}" //结构或联合说明符 | <struct-or-union> "{" {<struct-declaration>}+ "}" | <struct-or-union> <identifier> <struct-or-union> ::= "struct" //结构体,共用体 | "un...
const float short unsigned for signed void default goto sizeof volatile do if static while continue 3. 标识符 identifier : nodigit identifier nodigit identifier digit nodigit : _ a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M...
assignment n.赋值 double :声明双精度变量或函数floating point number浮点数 int: 声明整型变量或函数proliferation n.增服 struct:声明结构体变量或函数high-level language高级语 break:跳出当前循环pointer n.指针natural language 自然语言 else :条件语句否定分支(与 if 连用)array n.数组矩阵, long :声明长...
| struct_or_union IDENTIFIER 结构或联合说明符:结构或联合标识符'{'结构体声明列表'}' | 结构或联合'{'结构体声明列表'}' | 结构或联合标识符 struct_or_union : STRUCT | UNION 结构或联合:结构体 | 联合 struct_declaration_list : struct_declaration | struct_declaration_list struct_declaration 结构体...
structtest{inti;shortc;char*p;chars[10];//char s[0] 同理};intmain(void){structtest*pt=NULL;// 下面打印相对地址,分别为0,4,8,cprintf("&i = %x\n",&pt->i);//因为操作符优先级,我没有写成&(pt->i)printf("&c = %x\n",&pt->c);printf("&p = %x\n",&pt->p);printf("&s...
structM2{// bad: incomplete set of default operationspublic:// ...// ... no copy or move operations ...~M2(){delete[]rep;}private:pair<int,int>*rep;// zero-terminated set of pairs};voiduse(){M2x;M2y;// ...x=y;// the default assignment// ...} ...
default inline struct _Imaginary do int switch double long typedef else register union 程序中出现的关键字必须严格按上表所示格式书写。某些编译器把特定的标识符(例如 asm)视为附加关 键字。标准库用到的标识符也是受限的(见 21.1 节),以下划线开头的标识符同样是受限的。误用这些名字 可能会导致编译或链接...
| <struct-or-union-specifier> | <enum-specifier> | <typedef-name> <struct-or-union-specifier> ::= <struct-or-union> <identifier> "{" {<struct-declaration>}+ "}" | <struct-or-union> "{" {<struct-declaration>}+ "}" | <struct-or-union> <identifier> ...
此时S 等价于 struct Student,但两个标识符名称空间不相同。 另外还可以定义与 struct Student 不冲突的 void Student() {}。 C++ 中 由于编译器定位符号的规则(搜索规则)改变,导致不同于C语言。 一、如果在类标识符空间定义了 struct Student {...};,使用 Student me; 时,编译器将搜索全局标识符表,Student...
// C2280_uninit.cpp// compile with: cl /c C2280_uninit.cppstructA{constinti;// uninitialized const-qualified data// members or reference type data members cause// the implicit default constructor to be deleted.// To fix, initialize the value in the declaration:// const int i = 42;} ...