| CARVIEW |
Select Language
HTTP/1.1 301 Moved Permanently
Server: nginx
Date: Wed, 30 Jul 2025 23:50:25 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Location: /reference/cstring/strcspn/
HTTP/1.1 200 OK
Server: nginx
Date: Wed, 30 Jul 2025 23:50:25 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
ETag: W/"6b22-nT2vfGgsgsbKsIiLVEhPpRbk7Vs"
Content-Encoding: gzip
Scans str1 for the first occurrence of any of the characters that are part of str2, returning the number of characters of str1 read before this first occurrence.
The search includes the terminating null-characters. Therefore, the function will return the length of str1 if none of the characters of str2 are found in str1.
This is the length of str1 if none of the characters in str2 are found in str1.
size_t is an unsigned integral type.
Output:
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>
function
<cstring>
strcspn
size_t strcspn ( const char * str1, const char * str2 );
Get span until character in string
The search includes the terminating null-characters. Therefore, the function will return the length of str1 if none of the characters of str2 are found in str1.
Parameters
- str1
- C string to be scanned.
- str2
- C string containing the characters to match.
Return value
The length of the initial part of str1 not containing any of the characters that are part of str2.This is the length of str1 if none of the characters in str2 are found in str1.
size_t is an unsigned integral type.
Example
|
|
Output:
The first number in str is at position 5 |
See also
- strpbrk
- Locate characters in string (function)
- strspn
- Get span of character set in string (function)
- strstr
- Locate substring (function)
- strncmp
- Compare characters of two strings (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