std::memchr
From cppreference.com
| Defined in header <cstring>
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| const void* memchr( const void* ptr, int ch, std::size_t count ); |
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| void* memchr( void* ptr, int ch, std::size_t count ); |
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Converts ch to unsigned char and locates the first occurrence of that value in the initial count bytes (each interpreted as unsigned char) of the object pointed to by ptr.
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This function behaves as if it reads the bytes sequentially and stops as soon as a matching bytes is found: if the array pointed to by ptr is smaller than count, but the match is found within the array, the behavior is well-defined. |
(since C++17) |
Parameters
| ptr | - | pointer to the object to be examined |
| ch | - | byte to search for |
| count | - | max number of bytes to examine |
Return value
Pointer to the location of the byte, or a null pointer if no such byte is found.
Example
Search an array of characters.
Run this code
Output:
search character found
See also
| finds the first occurrence of a character (function) | |
| (C++11) |
finds the first element satisfying specific criteria (function template) |
| C documentation for memchr
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