/* Demonstrate more facts about strings.
 */
#include <stdio.h>
#include <string.h>

int main( void ) {
    char s1[4];
    char s2[4];
    int i;

    s1[0] = 'a'; s1[1] = 'b'; s1[2] = 'c'; s1[3] = '\0';

    s2[0] = 'a';n s2[1] = 'b'; s2[2] = 'c'; s2[3] = ' ';

    /* Compare memory addresses which, of course, will not be equal.
     */
    if ( s1 == s2 ) {
        printf("s1 = %s equals s2 = %s\n", s1, s2);
    } else {
        printf("s1 = %s does not equal s2 = %s\n", s1, s2);
    } /* if */

    /* Compare string values. However, since s2 is not terminated by '\0', strcmp does not consider them equal.
     * In fact, printing of s2 is not correct for the same reason.
     */
    if ( strcmp(s1, s2) == 0 ) {
        printf("s1 = %s equals s2 = %s\n", s1, s2);
    } else {
        printf("s1 = %s does not equal s2 = %s\n", s1, s2);
    } /* if */

    /* Now s1 and s2 are identical with regard to the string values.
     */
    s2[3] = '\0';
    if ( strcmp(s1, s2) == 0 ) {
        printf("s1 = %s equals s2 = %s\n", s1, s2);
    } else {
        printf("s1 = %s does not equal s2 = %s\n", s1, s2);
    } /* if */
} /* main */