|
大小: 774
备注:
|
← 于2008-02-23 15:37:01修订的的版本3 ⇥
大小: 774
备注: converted to 1.6 markup
|
| 未发现区别！ | |
A.6.8 Pointers to Void
Any pointer to an object may be converted to type void * without loss of information. If the result is converted back to the original pointer type, the original pointer is recovered. Unlike the pointer-to-pointer conversions discussed in Par.A.6.6, which generally require an explicit cast, pointers may be assigned to and from pointers of type void *, and may be compared with them.
- This interpretation of void * pointers is new; previously, char * pointers played the role of generic pointer. The ANSI standard specifically blesses the meeting of void * pointers with object pointers in assignments and relationals, while requiring explicit casts for other pointer mixtures.