strcspn
From cppreference.com
Defined in header
<string.h>
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size_t strcspn( const char *dest, const char *src );
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Returns the length of the maximum initial segment of the byte string pointed to by dest
, that consists of only the characters not found in byte string pointed to by src
.
The function name stands for "complementary span"
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[edit] Parameters
dest | - | pointer to the null-terminated byte string to be analyzed |
src | - | pointer to the null-terminated byte string that contains the characters to search for |
[edit] Return value
The length of the maximum initial segment that contains only characters not found in the byte string pointed to by src
[edit] Example
Run this code
Output:
'abcde312$#@' contains invalid chars starting aa position 8
[edit] References
- C11 standard (ISO/IEC 9899:2011):
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- 7.24.5.3 The strcspn function (p: 368)
- C99 standard (ISO/IEC 9899:1999):
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- 7.21.5.3 The strcspn function (p: 331)
- C89/C90 standard (ISO/IEC 9899:1990):
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- 4.11.5.3 The strcspn function
[edit] See also
returns the length of the maximum initial segment that consists of only the characters found in another byte string (function) |
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(C95)
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returns the length of the maximum initial segment that consists of only the wide chars not found in another wide string (function) |
finds the first location of any character in one string, in another string (function) |
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C++ documentation for strcspn
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