C Reference String Operation: memchr()

The memchr() function returns a pointer to the first occurrence of c in the first n bytes of a memory area.

Usage:

void *memchr(const void *s, int c, size_t n);

If c does not occur, a null pointer is returned.

memchr() source code example:

	#include<stdio.h>
	#include<string.h>

	main()
	{
		char line[100];
		strcpy(line, "aaabccc");

		if( memchr(line,'b',strlen(line)) == NULL )
			printf("b not found\n");
		else
			printf("b is found\n");
	}

Output of the example:

	b is found