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Merge branch 'master' of http://192.168.12.10:3033/ivan-igorevich/basic-c 

# Conflicts:
#	main.tex
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Ivan I. Ovchinnikov 2021-09-06 13:03:59 +03:00
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44
schemes/pointer.tex Normal file
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\tikzset{every picture/.style={line width=0.75pt}} %set default line width to 0.75pt
\begin{tikzpicture}[x=0.75pt,y=0.75pt,yscale=-1,xscale=1]
%uncomment if require: \path (0,460); %set diagram left start at 0, and has height of 460
%Shape: Rectangle [id:dp48909031690071814]
\draw (40,150) -- (199,150) -- (199,220.5) -- (40,220.5) -- cycle ;
%Shape: Rectangle [id:dp3254956575959984]
\draw (222,60) -- (381,60) -- (381,130.5) -- (222,130.5) -- cycle ;
%Shape: Rectangle [id:dp8271767901522998]
\draw (401,151) -- (560,151) -- (560,221.5) -- (401,221.5) -- cycle ;
%Shape: Rectangle [id:dp7663103953587053]
\draw (220,240) -- (379,240) -- (379,310.5) -- (220,310.5) -- cycle ;
%Curve Lines [id:da5551761286150834]
\draw (383,91) .. controls (420.81,62.64) and (422.98,61.51) .. (490.97,150.16) ;
\draw [shift={(492,151.5)}, rotate = 232.52] [color={rgb, 255:red, 0; green, 0; blue, 0 } ][line width=0.75] (10.93,-3.29) .. controls (6.95,-1.4) and (3.31,-0.3) .. (0,0) .. controls (3.31,0.3) and (6.95,1.4) .. (10.93,3.29) ;
%Curve Lines [id:da7602593545992278]
\draw (490,223) .. controls (553.36,260.13) and (430.5,280.1) .. (382.43,290.2) ;
\draw [shift={(381,290.5)}, rotate = 347.99] [color={rgb, 255:red, 0; green, 0; blue, 0 } ][line width=0.75] (10.93,-3.29) .. controls (6.95,-1.4) and (3.31,-0.3) .. (0,0) .. controls (3.31,0.3) and (6.95,1.4) .. (10.93,3.29) ;
%Curve Lines [id:da0637330676841148]
\draw (221,279) .. controls (188.16,311.34) and (187.01,308.53) .. (113.12,223.78) ;
\draw [shift={(112,222.5)}, rotate = 408.90999999999997] [color={rgb, 255:red, 0; green, 0; blue, 0 } ][line width=0.75] (10.93,-3.29) .. controls (6.95,-1.4) and (3.31,-0.3) .. (0,0) .. controls (3.31,0.3) and (6.95,1.4) .. (10.93,3.29) ;
%Curve Lines [id:da9922300811837096]
\draw (121,152) .. controls (86,85.5) and (85,83.5) .. (223,90.5) ;
\draw [shift={(223,90.5)}, rotate = 182.9] [color={rgb, 255:red, 0; green, 0; blue, 0 } ][line width=0.75] (10.93,-3.29) .. controls (6.95,-1.4) and (3.31,-0.3) .. (0,0) .. controls (3.31,0.3) and (6.95,1.4) .. (10.93,3.29) ;
% Text Node
\draw (49,155) node [anchor=north west][inner sep=0.75pt] [align=left] {Значение};
% Text Node
\draw (231,69) node [anchor=north west][inner sep=0.75pt] [align=left] {Переменная \\(идентификатор)};
% Text Node
\draw (413,162) node [anchor=north west][inner sep=0.75pt] [align=left] {Адрес};
% Text Node
\draw (236,251) node [anchor=north west][inner sep=0.75pt] [align=left] {Указатель};
% Text Node
\draw (457,68) node [anchor=north west][inner sep=0.75pt] [align=left] {Хранится по};
% Text Node
\draw (470,272) node [anchor=north west][inner sep=0.75pt] [align=left] {Сохраняется в};
% Text Node
\draw (88,66) node [anchor=north west][inner sep=0.75pt] [align=left] {Получается по};
% Text Node
\draw (65,299) node [anchor=north west][inner sep=0.75pt] [align=left] {Разыменовывается};
\end{tikzpicture}

1
sections/04-variables.tex
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@ -72,6 +72,7 @@ integers: 1
$
\end{verbatim}
\end{figure}
\label{text:pointers}
\paragraph{Тип данных - указатель.} Как было сказано - переменная это именованный контейнер. У каждого такого контейнера есть свой собственный адрес в оперативной памяти. Язык С позволяет узнать этот адрес и работать с ним. Оператор взятия адреса это знак амперсанд (\&), написанный перед именем переменной. То есть у любой переменной всегда есть значение и адрес где это значение хранится. Для вывода в консоль адреса используется специальный заполнитель - \code{\%p}.
\begin{figure}[h!]