| CARVIEW |
Select Language
HTTP/1.1 301 Moved Permanently
Server: nginx
Date: Sat, 19 Jul 2025 17:37:31 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Location: /reference/cstdlib/abs/
HTTP/1.1 200 OK
Server: nginx
Date: Sat, 19 Jul 2025 17:37:31 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
ETag: W/"7f05-JFg6gOk/47jpmEw+Y7bA1wduCOI"
Content-Encoding: gzip
Returns the absolute value of parameter n (
In C++, this function is also overloaded in header <cmath> for floating-point types (see cmath abs), in header <complex> for complex numbers (see complex abs), and in header <valarray> for valarrays (see valarray abs).
For the
For the
Output:
If the result cannot be represented by the returned type (such as
Reference
C library:
- <cassert> (assert.h)
- <cctype> (ctype.h)
- <cerrno> (errno.h)
-
<cfenv> (fenv.h)C++11
- <cfloat> (float.h)
-
<cinttypes> (inttypes.h)C++11
- <ciso646> (iso646.h)
- <climits> (limits.h)
- <clocale> (locale.h)
- <cmath> (math.h)
- <csetjmp> (setjmp.h)
- <csignal> (signal.h)
- <cstdarg> (stdarg.h)
-
<cstdbool> (stdbool.h)C++11
- <cstddef> (stddef.h)
-
<cstdint> (stdint.h)C++11
- <cstdio> (stdio.h)
- <cstdlib> (stdlib.h)
- <cstring> (string.h)
-
<ctgmath> (tgmath.h)C++11
- <ctime> (time.h)
-
<cuchar> (uchar.h)C++11
- <cwchar> (wchar.h)
- <cwctype> (wctype.h)
Containers:
-
<array>C++11
- <deque>
-
<forward_list>C++11
- <list>
- <map>
- <queue>
- <set>
- <stack>
-
<unordered_map>C++11
-
<unordered_set>C++11
- <vector>
-
Input/Output:
Multi-threading:
-
<atomic>C++11
-
<condition_variable>C++11
-
<future>C++11
-
<mutex>C++11
-
<thread>C++11
-
Other:
- <algorithm>
- <bitset>
-
<chrono>C++11
-
<codecvt>C++11
- <complex>
- <exception>
- <functional>
-
<initializer_list>C++11
- <iterator>
- <limits>
- <locale>
- <memory>
- <new>
- <numeric>
-
<random>C++11
-
<ratio>C++11
-
<regex>C++11
- <stdexcept>
- <string>
-
<system_error>C++11
-
<tuple>C++11
-
<type_traits>C++11
-
<typeindex>C++11
- <typeinfo>
- <utility>
- <valarray>
<cstdlib> (stdlib.h)
functions
-
_ExitC++11
- abort
- abs
-
at_quick_exitC++11
- atexit
- atof
- atoi
- atol
-
atollC++11
- bsearch
- calloc
- div
- exit
- free
- getenv
- labs
- ldiv
-
llabsC++11
-
lldivC++11
- malloc
- mblen
- mbstowcs
- mbtowc
- qsort
-
quick_exitC++11
- rand
- realloc
- srand
- strtod
-
strtofC++11
- strtol
-
strtoldC++11
-
strtollC++11
- strtoul
-
strtoullC++11
- system
- wcstombs
- wctomb
-
functions (non-standard)
types
macro constants
function
<cstdlib>
abs
int abs (int n);
int abs ( int n);long int abs (long int n);
int abs ( int n); long int abs ( long int n);long long int abs (long long int n);
Absolute value
/n/ ).In C++, this function is also overloaded in header <cmath> for floating-point types (see cmath abs), in header <complex> for complex numbers (see complex abs), and in header <valarray> for valarrays (see valarray abs).
Parameters
- n
- Integral value.
Return Value
The absolute value of n.Portability
In C, only theint version exists.For the
long int equivalent see labs.For the
long long int equivalent see llabs.Example
|
|
Output:
n=23 m=11 |
Data races
Concurrently calling this function is safe, causing no data races.Exceptions (C++)
No-throw guarantee: this function throws no exceptions.If the result cannot be represented by the returned type (such as
abs(INT_MIN) in an implementation with two's complement signed values), it causes undefined behavior.See also
- labs
- Absolute value (function)
- fabs
- Compute absolute value (function)
- div
- Integral division (function)
Home page | Privacy policy
© cplusplus.com, 2000-2025 - All rights reserved - v3.3.4s
Spotted an error? contact us
© cplusplus.com, 2000-2025 - All rights reserved - v3.3.4s
Spotted an error? contact us