strchr.c

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/*
 * Local copy of strchr (a.k.a. index) for portability.
 * Totally public domain.
 */

#include <stdio.h>

char *
     strchr(s, c)
     char *s, c;
{
	char *x = s;

	while (*x != c)
		if (*x == '\0')
			return (NULL);
		else
			++x;
	return (x);
}