08.08.2020
C++ Standard Dev
C Program to Calculate Standard Deviation. This program calculates the standard deviation of 10 data using arrays. To understand this example, you should have the knowledge of following C programming topics: This program calculates the standard deviation of a individual series using arrays. Visit this page to learn about Standard Deviation.
- Jun 09, 2017 From Wikibooks, open books for an open world C Programming Code/Standard C LibraryC Programming Code/Standard C Library. The latest reviewed version was checked on 9 June 2017.There are 2 pending changes awaiting review.
- I started C this week and have been doing a little project. So i'm trying to calc standard deviation & variance. My code loads a file of 100 integers and put them into an array, counts them, calcs mean, sum, var and sd. But i'm having a little trouble with variance. I keep getting a huge number - i have a feeling it's to do with its calculation.
- This approach also helps C compilers to track the Standard more closely and add both the experimental and the draft-final C features in a more consistent order. The current schedule is in paper P1000. Many TSes are focusing particularly on producing new C standard libraries; to participate, see the instructions for how to Submit a Proposal.
- Mar 07, 2017 We’re not just implementing the C Standard, we’re helping to develop it. The MSVC team is a major contributor to the development of the C Standard. In addition to our participation in the standards committee meeting, editors from three major Technical Specifications (Coroutines, Modules, and Ranges) work on the MSVC team.
< cpp
C++| Language | ||||
| Standard Library Headers | ||||
| Freestanding and hosted implementations | ||||
| Named requirements | ||||
| Language support library | ||||
| Concepts library(C++20) | ||||
| Diagnostics library | ||||
| Utilities library | ||||
| Strings library | ||||
| Containers library | ||||
| Iterators library | ||||
| Ranges library(C++20) | ||||
| Algorithms library | ||||
| Numerics library | ||||
| Input/output library | ||||
| Localizations library | ||||
| Regular expressions library(C++11) | ||||
| Atomic operations library(C++11) | ||||
| Thread support library(C++11) | ||||
| Filesystem library(C++17) | ||||
| Technical Specifications |
| Language Support | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| Diagnostics | |||||||||||||||||||||||||||||||||||||||||||||||||||
| General utilities | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| Strings | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| Localization | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Containers | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| Iterators | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| Ranges | |||||||||||||||||||||||||||||||||||||||||||||||||||
| <ranges> | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Algorithms | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Numerics | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| Input/Output | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| Regular expressions | |||||||||||||||||||||||||||||||||||||||||||||||||||
| <regex> | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Filesystem support | |||||||||||||||||||||||||||||||||||||||||||||||||||
| <filesystem> | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Thread support | |||||||||||||||||||||||||||||||||||||||||||||||||||
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The interface of C++ standard library is defined by the following collection of headers.
Concepts library | ||
<concepts>(since C++20) | Fundamental library concepts | |
Coroutines library | ||
<coroutine>(since C++20) | Coroutine support library | |
Utilities library | ||
<cstdlib> | General purpose utilities: program control, dynamic memory allocation, random numbers, sort and search | |
<csignal> | Functions and macro constants for signal management | |
<csetjmp> | Macro (and function) that saves (and jumps) to an execution context | |
<cstdarg> | Handling of variable length argument lists | |
<typeinfo> | Runtime type information utilities | |
<typeindex>(since C++11) | std::type_index | |
<type_traits>(since C++11) | Compile-time type information | |
<bitset> | std::bitset class template | |
<functional> | Function objects, Function invocations, Bind operations and Reference wrappers | |
<utility> | Various utility components | |
<ctime> | C-style time/date utilites | |
<chrono>(since C++11) | C++ time utilites | |
<cstddef> | standard macros and typedefs | |
<initializer_list>(since C++11) | std::initializer_list class template | |
<tuple>(since C++11) | std::tuple class template | |
<any>(since C++17) | std::any class | |
<optional>(since C++17) | std::optional class template | |
<variant>(since C++17) | std::variant class template | |
<compare>(since C++20) | Three-way comparison operator support | |
<version>(since C++20) | supplies implementation-dependent library information | |
<source_location>(since C++20) | supplies means to obtain source code location | |
Dynamic memory management | ||
<new> | Low-level memory management utilities | |
<memory> | Higher level memory management utilities | |
<scoped_allocator>(since C++11) | Nested allocator class | |
<memory_resource>(since C++17) | Polymorphic allocators and memory resources | |
Numeric limits | ||
<climits> | limits of integral types | |
<cfloat> | limits of float types | |
<cstdint>(since C++11) | fixed-size types and limits of other types | |
<cinttypes>(since C++11) | formatting macros , intmax_t and uintmax_t math and conversions | |
<limits> | standardized way to query properties of arithmetic types | |
Error handling | ||
<exception> | Exception handling utilities | |
<stdexcept> | Standard exception objects | |
<cassert> | Conditionally compiled macro that compares its argument to zero | |
<system_error>(since C++11) | defines std::error_code, a platform-dependent error code | |
<cerrno> | Macro containing the last error number | |
Strings library | ||
<cctype> | Functions to determine the type contained in character data | |
<cwctype> | Functions to determine the type contained in wide character data | |
<cstring> | various narrow character string handling functions | |
<cwchar> | various wide and multibyte string handling functions | |
<cuchar>(since C++11) | C-style Unicode character conversion functions | |
<string> | std::basic_string class template | |
<string_view>(since C++17) | std::basic_string_view class template | |
<charconv>(since C++17) | std::to_chars and std::from_chars | |
<format>(since C++20) | Formatting library including std::format | |
Containers library | ||
<array>(since C++11) | std::array container | |
<vector> | std::vector container | |
<deque> | std::deque container | |
<list> | std::list container | |
<forward_list>(since C++11) | std::forward_list container | |
<set> | std::set and std::multiset associative containers | |
<map> | std::map and std::multimap associative containers | |
<unordered_set>(since C++11) | std::unordered_set and std::unordered_multiset unordered associative containers | |
<unordered_map>(since C++11) | std::unordered_map and std::unordered_multimap unordered associative containers | |
<stack> | std::stack container adaptor | |
<queue> | std::queue and std::priority_queue container adaptors | |
<span>(since C++20) | std::span view | |
Iterators library | ||
<iterator> | Range iterators | |
Ranges library | ||
<ranges>(since C++20) | Range access, primitives, requirements, utilities and adaptors | |
Algorithms library | ||
<algorithm> | Algorithms that operate on ranges | |
<execution>(since C++17) | Predefined execution policies for parallel versions of the algorithms | |
Numerics library | ||
<cmath> | Common mathematics functions | |
<complex> | Complex number type | |
<valarray> | Class for representing and manipulating arrays of values | |
<random>(since C++11) | Random number generators and distributions | |
<numeric> | Numeric operations on values in containers | |
<ratio>(since C++11) | Compile-time rational arithmetic | |
<cfenv>(since C++11) | Floating-point environment access functions | |
<bit>(since C++20) | Bit manipulation functions | |
<numbers>(since C++20) | Math constants | |
Input/output library | ||
<iosfwd> | forward declarations of all classes in the input/output library | |
<ios> | std::ios_base class, std::basic_ios class template and several typedefs | |
<istream> | std::basic_istream class template and several typedefs | |
<ostream> | std::basic_ostream, std::basic_iostream class templates and several typedefs | |
<iostream> | several standard stream objects | |
<fstream> | std::basic_fstream, std::basic_ifstream, std::basic_ofstream class templates and several typedefs | |
<sstream> | std::basic_stringstream, std::basic_istringstream, std::basic_ostringstream class templates and several typedefs | |
<syncstream>(since C++20) | std::basic_osyncstream, std::basic_syncbuf, and typedefs | |
<strstream>(deprecated in C++98) | std::strstream, std::istrstream, std::ostrstream | |
<iomanip> | Helper functions to control the format of input and output | |
<streambuf> | std::basic_streambuf class template | |
<cstdio> | C-style input-output functions | |
Localization library | ||
<locale> | Localization utilities | |
<clocale> | C localization utilities | |
<codecvt>(since C++11)(deprecated in C++17) | Unicode conversion facilities | |
Regular Expressions library | ||
<regex>(since C++11) | Classes, algorithms and iterators to support regular expression processing | |
Atomic Operations library | ||
<atomic>(since C++11) | Atomic operations library | |
Thread support library | ||
<thread>(since C++11) | std::thread class and supporting functions | |
<stop_token>(since C++20) | Stop tokens for std::jthread | |
<mutex>(since C++11) | mutual exclusion primitives | |
<shared_mutex>(since C++14) | shared mutual exclusion primitives | |
<future>(since C++11) | primitives for asynchronous computations | |
<condition_variable>(since C++11) | thread waiting conditions | |
<semaphore>(since C++20) | semaphores | |
<latch>(since C++20) | latches | |
<barrier>(since C++20) | barriers | |
Filesystem library | ||
<filesystem>(since C++17) | std::path class and supporting functions | |
[edit]C compatibility headers
For some of the C standard library headers of the form xxx.h, the C++ standard library both includes an identically-named header and another header of the form cxxx (all meaningful cxxx headers are listed above). When did they start using auto tune in production.
With the exception of complex.h , each xxx.h header included in the C++ standard library places in the global namespace each name that the corresponding cxxx header would have placed in the std namespace.
These headers are allowed to also declare the same names in the std namespace, and the corresponding cxxx headers are allowed to also declare the same names in the global namespace: including <cstdlib> definitely provides std::malloc and may also provide ::malloc. Including <stdlib.h> definitely provides ::malloc and may also provide std::malloc. This applies even to functions and function overloads that are not part of C standard library.
<assert.h>(deprecated) | behaves as if each name from <cassert> is placed in global namespace |
<ctype.h>(deprecated) | behaves as if each name from <cctype> is placed in global namespace |
<errno.h>(deprecated) | behaves as if each name from <cerrno> is placed in global namespace |
<fenv.h>(deprecated) | behaves as if each name from <cfenv> is placed in global namespace |
<float.h>(deprecated) | behaves as if each name from <cfloat> is placed in global namespace |
<inttypes.h>(deprecated) | behaves as if each name from <cinttypes> is placed in global namespace |
<limits.h>(deprecated) | behaves as if each name from <climits> is placed in global namespace |
<locale.h>(deprecated) | behaves as if each name from <clocale> is placed in global namespace |
<math.h>(deprecated) | behaves as if each name from <cmath> is placed in global namespace except for names of mathematical special functions |
<setjmp.h>(deprecated) | behaves as if each name from <csetjmp> is placed in global namespace |
<signal.h>(deprecated) | behaves as if each name from <csignal> is placed in global namespace |
<stdarg.h>(deprecated) | behaves as if each name from <cstdarg> is placed in global namespace |
<stddef.h>(deprecated) | behaves as if each name from <cstddef> is placed in global namespace except for names of std::byte and related functions |
<stdint.h>(deprecated) | behaves as if each name from <cstdint> is placed in global namespace |
<stdio.h>(deprecated) | behaves as if each name from <cstdio> is placed in global namespace |
<stdlib.h>(deprecated) | behaves as if each name from <cstdlib> is placed in global namespace |
<string.h>(deprecated) | behaves as if each name from <cstring> is placed in global namespace |
<time.h>(deprecated) | behaves as if each name from <ctime> is placed in global namespace |
<uchar.h>(deprecated) | behaves as if each name from <cuchar> is placed in global namespace |
<wchar.h>(deprecated) | behaves as if each name from <cwchar> is placed in global namespace |
<wctype.h>(deprecated) | behaves as if each name from <cwctype> is placed in global namespace |
C++ Standard Deviation
[edit]Empty C headers
The headers <complex.h>, <ccomplex>, <tgmath.h>, and <ctgmath> do not contain any content from the C standard library and instead merely include other headers from the C++ standard library. The use of all these headers is deprecated in C++.
<ccomplex>(since C++11)(deprecated in C++17)(removed in C++20) | simply includes the header <complex> |
<complex.h>(deprecated) | simply includes the header <complex> |
<ctgmath>(since C++11)(deprecated in C++17)(removed in C++20) | simply includes the headers <complex> and <cmath>: the overloads equivalent to the contents of the C header tgmath.h are already provided by those headers |
<tgmath.h>(deprecated) | simply includes the headers <complex> and <cmath> |
[edit]Meaningless C headers
The headers <ciso646>, <cstdalign>, and <cstdbool> are meaningless in C++ because the macros they provide in C are language keywords in C++.
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<ciso646>(removed in C++20) | empty header. The macros that appear in iso646.h in C are keywords in C++ |
<iso646.h>(deprecated) | has no effect |
<cstdalign>(since C++11)(deprecated in C++17)(removed in C++20) | defines one compatibility macro constant |
<stdalign.h>(deprecated) | defines one compatibility macro constant |
<cstdbool>(since C++11)(deprecated in C++17)(removed in C++20) | defines one compatibility macro constant |
<stdbool.h>(deprecated) | defines one compatibility macro constant |
[edit]Unsupported C headers
C++ Standard Deviation
The C headers <stdatomic.h>, <stdnoreturn.h>, and <threads.h> are not included in C++ and have no cxxx equivalents.
[edit]Experimental libraries
C++ TR's/TS's also define several collections of headers.
[edit]See also
Retrieved from 'https://en.cppreference.com/mwiki/index.php?title=cpp/header&oldid=114097'