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struct assignment no longer needs cast (C++11) #6

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struct assignment no longer needs cast (C++11) #6

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17 changes: 2 additions & 15 deletions book/cha8.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -143,26 +143,13 @@ \section{Operations on structures}
the structure one by one, in order. So in this case, {\tt x}
gets the first value and {\tt y} gets the second.

Unfortunately, this syntax can be used only in an initialization,
not in an assignment statement. So the following is illegal.
This syntax can also be used in assignment. So the following is legal.

\begin{verbatim}
Point blank;
blank = { 3.0, 4.0 }; // WRONG !!
blank = { 3.0, 4.0 };
\end{verbatim}
%
You might wonder why this perfectly reasonable statement should
be illegal; I'm not sure, but I think the problem is that the compiler
doesn't know what type the right hand side should be. If you
add a typecast:

\begin{verbatim}
Point blank;
blank = (Point){ 3.0, 4.0 };
\end{verbatim}
%
That works.

It is legal to assign one structure to
another. For example:

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