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diff --git a/dev/c/datatypes.html b/dev/c/datatypes.html new file mode 100644 index 0000000..35b6ca4 --- /dev/null +++ b/dev/c/datatypes.html @@ -0,0 +1,178 @@ +<!DOCTYPE html> +<html dir="ltr" lang="en"> + <head> + <meta charset='utf-8'> + <title>Datatypes</title> + </head> + <body> + <a href="../index.html">Development Index</a> + + <h1>Datatypes</h1> + + <h2 id="types">Types</h2> + + <dl> + <dt>char</dt> + <dd>Integer, one byte.</dd> + <dt>int</dt> + <dd>Integer.</dd> + <dt>float</dt> + <dd>Single precision floating point.</dd> + <dt>double</dt> + <dd>Double precision floating point.</dd> + <dt>void</dt> + <dd>Absence of type.</dd> + </dl> + + + <h2 id="datatypes">Data types</h2> + + <h2 id="int">Integer</h2> + <p>Allowed <a href="elements.html#types">types</a> are char and int;</p> + <dl> + <dt>signed char</dt> + <dd>8 bit, from -128 to 127.</dd> + <dt>unsigned char</dt> + <dd>8 bit, from 0 to 255.</dd> + <dt>char</dt> + <dd>8 bit, used to store ASCII, ex; 'h', '\n', etc...</dd> + <dt>short int</dt> + <dd>16 bit, from -32,768 to 32,767.</dd> + <dt>unsigned short int</dt> + <dd>16 bit, from 0 to 65,535.</dd> + <dt>int</dt> + <dd>32 bit, from -2,147,483,648 to 2,147,483,647.</dd> + <dt>unsigned int</dt> + <dd>32 bit, from 0 to 4,294,967,295.</dd> + <dt>long int</dt> + <dd>32 bit, from -2,147,483,648 to 2,147,483,647.</dd> + <dt>unsigned long int</dt> + <dd>32 bit, from 0 to 4,294,967,295.</dd> + <dt>long long int</dt> + <dd>64 bit, from 9,223,372,036,854,775,808 + to 9,223,372,036,854,775,807.</dd> + <dt>unsigned long long int</dt> + <dd>64 bit, from 0 to 18,446,744,073,709,551,615.</dd> + </dl> + + <h2 id="double">Real number</h2> + + <p>Real numbers are fractional numbers, all floating points + are signed. Check float.h.</p> + + <dl> + <dt>float</dt> + <dd>From 1e-37 to 1e37</dd> + <dt>double</dt> + <dd>Largest of floating point.</dd> + <dt>long double</dt> + <dd>The long double data maybe larger than double</dd> + </dl> + + <h2 id="complex">Complex number</h2> + + <p><a href="https://www.gnu.org/software/gnu-c-manual/gnu-c-manual.html#Standard-Complex-Number-Types">Complex Number Types</a></p> + + <h2 id="enum">Enumeration</h2> + + <pre> + enum colors {black, orange, blue} color; + enum colors color; + </pre> + + <h2 id="union">Unions</h2> + + <pre> + union accounts { + int id; + float value; + } first_account, second_account; + </pre> + + <h2 id="struct">Structures</h2> + + <pre> + struct point { + int x, y; + } first_point; + struct point second_point; + </pre> + + <h2 id="array">Arrays</h2> + + <pre> + int account_array[9]; + int account_array[] = {0, 1, 2, 3}; + int account_array[] = {0, 1, 2, [9] = 9}; + </pre> + + <pre> + int account_array[2][9] { {1,2,3},{9,8,7} } + </pre> + + <p>Initializing string with individual characters the + null character must be defined;</p> + + <pre> + char black[] = {'b', 'l', 'a', 'c', 'k', '\0'} + </pre> + + <pre> + char black[] = "black"; + </pre> + + <pre> + union accounts { + int id; + float value; + }; + union accounts accounts_array[9]; + accounts_array[0].id = 8; + </pre> + + <pre> + struct point { + int x, y; + }; + struct point point_array[9]; + point_array[0].x=2; + point_array[0].y=3; + </pre> + + <h2 id="pointer">Pointers</h2> + <h2 id="it">Incomplete types</h2> + <h2 id="tq">Type qualifiers</h2> + <h2 id="st">Storage class</h2> + + <h2 id="format">Format Type Specifiers</h2> + + <dl> + <dt>%c</dt> + <dd>Character</dd> + <dt>%s</dt> + <dd>String of characters</dd> + <dt>%d</dt> + <dd>Decimal integer</dd> + <dt>%f</dt> + <dd>Decimal floating point</dd> + <dt>%llu</dt> + <dd>unsigned long long</dd> + <dt>%o</dt> + <dd>Signed octal</dd> + <dt>%u</dt> + <dd>Unsigned decimal integer</dd> + <dt>%x</dt> + <dd>Unsigned hexadecimal integer</dd> + <dt>%p</dt> + <dd>Pointer address</dd> + </dl> + + <a href="../index.html">Development Index</a> + <p>This is part of the c9 Manual. + Copyright (C) 2018 + c9 team. + See the file <a href="../../fdl-1.3-standalone.html">Gnu Free Documentation License</a> + for copying conditions.</p> + + </body> +</html> |