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.
Parameters
| ptr | - | pointer to the object to be examined |
| ch | - | character to search for |
| count | - | number of characters to examine |
Return value
Pointer to the location of the character, or NULL if no such character is found.