R. Clayton (rclayton@monmouth.edu)
(no date)
I've writting the following code
ostringstream message;
message << *this;
document.size=message.str().size();
document.data = new char [document.size];
document.data = message.str().c_str();
and gcc is complaining about
LList.cc:55: warning: invalid conversion from `const char*' to `char*'
While this is just a warning and the code seems to work, is there a better
way to do this?
In this case you should pay attention to the warning, because it's pointing to
a particularly odious bit of coding, one that will cause your code to fail
tests.
You want to ask yourself the question "What's being returned by
std::string::c_str()?" Nyhoff Section 3.4 sort of answers this question, but
Deitel and Deitel tells you what you need to know (look up c_str in the index;
I'm using the third, purple edition, but I imagine the other editions are the
same in this respect).
Once you've figured out the const char * problem, you should be in a position
to figure out what's wrong with
document.data = new char [document.size];
document.data = message.str().c_str();
I'll give you a hint: there's two things wrong with this code, both of them
unforgivably bad (and it has nothing to do with document.size being zero).
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