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Constant Pointers and Pointers to Constants

Constant Pointers and Pointers to Constants

Constant Pointers and Pointers to Constants. It is possible to distinguish three situations arising from using const with pointers and the things to which they point: A pointer to a const. Here, what’s pointed to cannot be modified, but we can set the pointer to point to something else:

By balin
(93 views)

Built-In (a.k.a. Native) Types in C++

Built-In (a.k.a. Native) Types in C++

Built-In (a.k.a. Native) Types in C++. int, long, short, char (signed, integer arithmetic) unsigned versions too unsigned int , unsigned long , etc. C++ guarantees a char is one byte in size Sizes of other types are platform dependent Can determine using sizeof() , <climits> INT_MAX

By janetmorgan
(0 views)


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Const

Const

Const. 黄志超 软件 0902. C 中的 const. 问题 1 : const 变量 & 常量   为什么下面的例子在使用一个 const 变量来初始化数组, ANSI C 的编译器会报告一个错误呢?  const int n = 5; int a[n];. 变量 n 被修饰为只读变量,可惜再怎么修饰也不是常量。而 ANSI C 规定数组定义时维度必须是“常量” , “只读变量”也是不可以的。 那常量和只读常量有什么区别呢?

By pello (202 views)

const

const

const. #define DIMENSIUNE 1000 const int DIMENSIUNE = 1000; Utilizarea valorilor constante este importantă, de exemplu, în declararea tablourilor de date. De exemplu, se poate face declaraţia: double vector [DIMENSIUNE];

By kibo-nelson (110 views)

const Value

const Value

const Value. const declares immutable value void Test(char* t) { t++; // OK, address is not const t[0] = 'a'; // OK, char is not const } void Test2( const char * t) { t++; // OK, address is not const t[0] = 'a'; // NO, char is const }. const Address. typedef char* PCHAR;

By dore (149 views)

const Security

const Security

A popular USENET joke: In C, you merely shoot yourself in the foot.

By forrest-marshall (78 views)

/* Descripción XDR */ const MAXUSERNAME=32; const MAXFILELEN=65535; const MAXNAMELEN=255;

/* Descripción XDR */ const MAXUSERNAME=32; const MAXFILELEN=65535; const MAXNAMELEN=255;

/* Descripción XDR */ const MAXUSERNAME=32; const MAXFILELEN=65535; const MAXNAMELEN=255; enum filekind { TEXT=0, DATA=1, EXEC=2 }; union filetype switch (filekind kind) { case TEXT: void; case DATA: string creator<MAXNAMELEN>;

By pippa (86 views)

The const Keyword

The const Keyword

The const Keyword. Extreme Encapsulation. Humble Beginnings. There are often cases in coding where it is helpful to use a const variable in a method or program. Even when working with fixed values, it is best to abstract them with variable names.

By ray (79 views)

Const member functions

Const member functions

Const member functions. Frequentemente construimos funções cujo objectivo é aceder a um objecto sem o alterar (seja público ou privado). Nesse caso é preciso dar indicação ao leitor humano que assim é criando funções membro constantes . Exemplo de alteração na classe node:

By vanig (67 views)

static, const, volatile

static, const, volatile

static, const, volatile. Static – zmienne klasowe. zmienna klasowa o atrybucie static jest wspólna dla wszystkich obiektów danej klasy istnieje nawet gdy nie ma żadnego obiektu można się do niej odwoływać za pomocą operatora zakresu. class ST {

By cynara (137 views)

Const INST_ID = 6

Const INST_ID = 6

<%. Const INST_ID = 6. ' // Begin Feed cache constants. Const FEED_CACHE_LEN_INTRO_EXTRACT = 250. Const FEED_PUB_TYPE_PROJECT = "projectevent". Const FEED_PUB_TYPE_EVENT = "event". Const FEED_PUB_TYPE_TEAM = "team". Const FEED_PUB_TYPE_PUBLICATION = "publication" '"Publication".

By xuan (139 views)