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

        main()
        {

            static char s1buf[] = "abcdefghijkl lkjihgfedcba";

            int i;

            char *status;

        /*  This program checks the strchr function by incrementally   */
        /*  going through a string that ascends to the middle and then */
        /*  descends towards the end.                                  */

            for (i = 0; s1buf[i] != '\0' && s1buf[i] != ' '; i++) {
                status = strchr(s1buf, s1buf[i]);

        /* Check for pointer to leftmost character - test 1.           */

                if (status != &s1buf[i])
                    printf("error in strchr");
            }
        }