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In computer programming, a variable-length array (VLA), also called variable-sized or runtime-sized, is an array data structure whose length is determined at runtime, instead of at compile time. [1] In the language C , the VLA is said to have a variably modified data type that depends on a value (see Dependent type ).
Cover of the C99 standards document. C99 (previously C9X, formally ISO/IEC 9899:1999) is a past version of the C programming language open standard. [1] It extends the previous version with new features for the language and the standard library, and helps implementations make better use of available computer hardware, such as IEEE 754-1985 floating-point arithmetic, and compiler technology. [2]
C99 and C11 added several additional features to C that have not been incorporated into standard C++ as of C++20, such as complex numbers, variable length arrays (complex numbers and variable length arrays are designated as optional extensions in C11), flexible array members, the restrict keyword, array parameter qualifiers, and compound literals.
C99 introduced "variable-length arrays" which address this issue. The following example using modern C (C99 or later) shows allocation of a two-dimensional array on the heap and the use of multi-dimensional array indexing for accesses (which can use bounds-checking on many C compilers):
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For example, the following macro ... condition variable and thread-specific storage functionality, ... Variable-length arrays [15] __STDC_NO_VLA__ Mandatory Compiler ...
She appeared in The Adventures of Tom Sawyer (1938), in W.C. Fields’ My Little Chickadee (1940), and in Bud Abbott and Lou Costello’s Comin’ Round the Mountain (1951), playing a nefarious ...
The term length is supposed to inoculate the director from political pressure. But it never works out that way. If Trump fires Wray, he’d be first president to fire 2 FBI directors.