memchr
From cppreference.com
Defined in header <string.h>
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void* memchr( const void* ptr, int ch, size_t count ); |
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Finds the first occurrence of ch
(after conversion to unsigned char as if by (unsigned char)ch) in the initial count
characters (each interpreted as unsigned char) of the object pointed to by ptr
.
The behavior is undefined if access occurs beyond the end of the array searched. The behavior is undefined if ptr
is a null pointer.
This function behaves as if it reads the characters sequentially and stops as soon as a matching character is found: if the array pointed to by |
(since C11) |
Parameters
ptr | - | pointer to the object to be examined |
ch | - | character to search for |
count | - | max number of characters to examine |
Return value
Pointer to the location of the character, or NULL if no such character is found.
Example
Run this code
Output:
search character found: DEFG
References
- C11 standard (ISO/IEC 9899:2011):
- 7.24.5.1 The memchr function (p: 367)
- C99 standard (ISO/IEC 9899:1999):
- 7.21.5.1 The memchr function (p: 330)
- C89/C90 standard (ISO/IEC 9899:1990):
- 4.11.5.1 The memchr function
See also
finds the first occurrence of a character (function) |