The const keyword can also be used in pointer declarations.Copy // constant_values3.cpp int main() { char *mybuf = 0, *yourbuf; char *const aptr = mybuf; *aptr = 'a'; // OK aptr = yourbuf; // C3892 } A pointer to a variable declared as const can be assigned only to...
CWG 1312C++11reinterpret_castis prohibited in constant expressions, but casting to and fromvoid*could achieve the same effectprohibited conversions from typecvvoid*to a pointer-to-object type CWG 1313C++11undefined behavior was permitted;
CurrentInstructionPointer CurrentInstructionPointerPaused CurrentInstructionPointerStopped CurrentLocationArrow Курсор CursorFile Кривой CustomAction CustomActionEditor CustomControl CustomCSS CustomErrorMessage CustomValidator Вырезать Цилиндр D Приложения DACApplications...
<c |language Syntax nullptr(since C23) Explanation The keywordnullptrdenotes a predefined null pointer constant. It is anon-lvalueof typenullptr_t.nullptrcan beconvertedto a pointer types orbool, where the result is the null pointer value of that type orfalserespectively. ...
* 没有const reference,因为引用本身就是 const pointer * 没有const reference,因为引用只是对象的别名,引用不是对象,不能用 const 修饰 > (为了方便记忆可以想成)被 const 修饰(在 const 后面)的值不可改变,如下文使用例子中的 `p2`、`p3` @@ -82,7 +82,7 @@ const 使用 class A { private: const...
* 自身是常量的指针(常量指针,const pointer) * 引用 * 指向常量的引用(reference to const) * 没有const reference,因为引用本身就是 const pointer * 没有const reference,因为引用只是对象的别名,引用不是对象,不能用 const 修饰 > (为了方便记忆可以想成)被 const 修饰(在 const 后面)的值不可改变,如下...
CurrentInstructionPointerPaused CurrentInstructionPointerStopped CurrentLocationArrow Cursor CursorFile Curve CustomAction CustomActionEditor CustomControl CustomCSS CustomErrorMessage CustomValidator Cut Cylinder D DACApplications DarkTheme Dash DataBar Database DatabaseApplication DatabaseAuditSpecification DatabaseAudit...
CallReturnInstructionPointerAlert CallStackWindow CallThread CallTo CallToMethod Camera CameraDisabled CameraOrbit CameraOutline Cancel CancelBuild CancellationScope CancelPerformanceReport CancelQuery CancelTest CancelXSISchema CandleStickChart CanvasElement CaptionTag CaptureFrame Carousel CascadingDr...
Documentation Home > Sun Studio 12: C User's Guide > Appendix E Implementation-Defined ISO/IEC C90 Behavior > E.1 Implementation Compared to the ISO Standard > E.1.14 Library Functions (G.3.14) > E.1.14.1 (7.1.6) The null pointer constant to which the macro NULL expands:...
chary[LENGTHOF(x)];// y also has 10 elementsBut macros are not type safe. The following code compiles despite the fact thatxis a pointer, which results in the calculation of nonsense: char*x; chary[LENGTHOF(x)];// No error! Expands to ...