同样的转换在C++中也是一样,在 C++11 标准(ISO/IEC 14882)的 4.2 Array-to-pointer conversion 一节中有如下表述: An expression of type “array of N T”, “array of runtime bound of T”, or “array of unknown bound of T” can be converted to a prvalue of type “pointer to T”. The...
按照指针算术，p+1 指向 array[1] 。于是 *(p+1) 就是指代 array[1] 这个对象的表达式，其类型...
不等价，数组能隐式转换成指针罢了。看到有书这么写的话应该考虑直接扔掉。数组和指针的区别应该是十分基...
std::size N> contexpr std::size array_size(std::array<T, N>) noexcept { return N; }...
converted to an expression with type ‘‘pointer to type’’ that points to the initial element of the array object and is not an lvalue. If the array object has register storage class, the behavior is undefined. 译:除了在使用sizeof和&运算符或者使用字符串字面量初始化数组之外,一个含有数组...
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There are a few cases where array names don't decay to pointers. To learn more, visit:When does array name doesn't decay into a pointer? Example 2: Arrays and Pointers #include<stdio.h>intmain(){intx[5] = {1,2,3,4,5};int* ptr;// ptr is assigned the address of the third ...
Flag all combinations of array decay and base to derived conversions. 提示所有数组退化和基类类型向派生类类型转换的情况。 Pass an array as a span rather than as a pointer, and don't let the array name suffer a derived-to-base conversion before getting into the span ...
Flag all combinations of array decay and base to derived conversions. 提示所有数组退化和基类类型向派生类类型转换的情况。 Pass an array as a span rather than as a pointer, and don't let the array name suffer a derived-to-base conversion before getting into the span ...
It is a normal pointer that holds the address of the first element. Similarly, a const array (e.g. const int arr[5]) decays into a pointer-to-const (const int*). Tip In C++, there are a few common cases where an C-style array doesn’t decay: When used as an argument to size...