c++ - Avoiding memory leaks while mutating c-strings -

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For educational purposes, I am using seestring in some testing programs. I would like to shorten strings with a placeholder like "...".

That is, "very long string" will be "enough one." If my maximum length is set to 13. Also, I do not want to delete the original string - so a small string should be copied.

This (static) method is below which I came up with. My question is that Should the memory allocated class for my short string be also responsible for freeing it? Now what I do is to store the returned string in a different "user class" and to free the memory that user class. 

  const char * TextHelper :: shortenWithPlaceholder (const char * text, size_t newSize) {char * short = new char [newSize + 1]; If (new size & lt; = 3) {strncpy_s (small, new size + 1, ".", New size); } Other {strncpy_s (small, new size + 1, text, new size -3); Strncat_s (small, new size + 1, "...", 3); } Returned; }

The standard approach to such functions is that the user must pass nearby [] Buffer You see it in functions such as sprintf () , for example, to take a destination buffer as a parameter, to keep the caller in full memory management problem in one place. Allows to be responsible for allocation and release of memory.


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