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[SPCA] Continue summary

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Janis Hutz
2026-01-06 10:52:34 +01:00
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semester3/spca/parts/00_c/01_basics/02_declarations.tex
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@@ -2,7 +2,7 @@
\subsubsection{Declarations}
We have already seen a few examples for how \texttt{C} handles declarations.
In concept they are similar (and scoping works the same) to most other \texttt{C}-like programming languages, including \texttt{Java}.
\inputcodewithfilename{c}{code-examples/00_c/}{02_declarations.c}
\inputcodewithfilename{c}{code-examples/00_c/00_basics/}{02_declarations.c}
A peculiarity of \texttt{C} is that the bit-count is not defined by the language, but rather the hardware it is compiled for.
\begin{fullTable}{llll}{\texttt{C} data type & typical 32-bit & ia32 & x86-64}{Comparison of byte-sizes for each datatype on different architectures}
@@ -35,3 +35,5 @@ Some will force a change of bit representation, but most won't (notably, when ca
Another important feature is that every \lC\ statement is also an expression, see above code block for example.
The \texttt{void} type has \bi{no} value and is used for untyped pointers and declaring functions with no return value
It is also possible to define a custom type using \texttt{typedef <type it represents> <name of the new type>}