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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 ).
variable-length arrays (although subsequently relegated in C11 to a conditional feature that implementations are not required to support) flexible array members; support for one-line comments beginning with //, as in BCPL, C++ and Java; new library functions, such as snprintf; new headers, such as <stdbool.h>, <complex.h>, <tgmath.h>, and ...
c = a + b In addition to support for vectorized arithmetic and relational operations, these languages also vectorize common mathematical functions such as sine. For example, if x is an array, then y = sin (x) will result in an array y whose elements are sine of the corresponding elements of the array x. Vectorized index operations are also ...
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 standardised variable-length arrays (VLAs) within block scope. Such array variables are allocated based on the value of an integer value at runtime upon entry to a block, and are deallocated at the end of the block. [3] As of C11 this feature is no longer required to be implemented by the compiler.
The stack is often used to store variables of fixed length local to the currently active functions. Programmers may further choose to explicitly use the stack to store local data of variable length. If a region of memory lies on the thread's stack, that memory is said to have been allocated on the stack, i.e. stack-based memory allocation (SBMA).
From January 2008 to June 2009, if you bought shares in companies when James F. Orr III joined the board, and sold them when he left, you would have a -98.0 percent return on your investment, compared to a -37.4 percent return from the S&P 500.
Variable-length arrays [15] __STDC_NO_VLA__ Mandatory Compiler support. Some features of C11 are supported by the GCC starting with version 4.6, ...