【C/C++】void

標籤：

voidThe (nonexistent) value of a void expression (an expression that has type void) shall not be used in any way, and implicit or explicit conversions (except to void) shall not be applied to such an expression. If an expression of any other type is evaluated as a void expression, its value or designator is discarded. (A void expression is evaluated for its side effects.)void;/***************************************nullptr both (int*)0 and nullptr are valid template-arguments for a non-type template-parameter of type “pointer to int.”【null pointer constant】An integer constant expression with the value 0, or such an expression cast to type void *, is called a null pointer constant.66) If a null pointer constant is converted to a pointer type, the resulting pointer, called a null pointer, is guaranteed to compare unequal to a pointer to any object or functionnullptr對應的一定是指標型變數，而null對應的有可能是指標型變數或者常量0Types *val = nullptr;

 

【C/C++】void