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You have to read pointer declarations right-to-left.

• const X* p means “p points to a X that is const” ? that is, the Fred object can’t be changed via p.
• X* const p means “p is a const pointer to a X” ? that is, you can change the X object via p, but you can’t change the pointer p itself.
• const X* const p means “p is a const pointer to a const X” ? that is, you can’t change the pointer p itself, nor can you change the X object via p.

source: ^USENET

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Related Blog Items

• How is "const correctness" related to ordinary type safety?
• const correctness
• What is allowed in C, but not in C++?
• Safe String Copy(strcpy) and Concatenate(strcat) Operations
• Reference Counting

This entry was written by ponnada and posted on December 8, 2006 at 5:16 pm and filed under Types, Declarations & Expressions. Bookmark the permalink. Follow any comments here with the RSS feed for this post. Post a comment or leave a trackback: Trackback URL.