strchr.c

来自「speech signal process tools」· C语言 代码 · 共 21 行

/*LINTLIBRARY*/
/*
 * Return the ptr in sp at which the character c appears;
 * NULL if not found
 */

/* static char *sccs_id = "@(#)strchr.c	1.2 12/8/89 ESI, ATT"; */

#define	NULL	0

char *
strchr(sp, c)
register char *sp, c;
{
	do {
		if(*sp == c)
			return(sp);
	} while(*sp++);
	return(NULL);
}