/* Program that places input words in alphabetic order.  */

#include <stdio.h>
#include <string.h>  /* necessary for using any str... function */

main () {
    char word1[31], word2[31];   /* max length 30 each */
    printf("Enter two words: ");
    scanf("%30s %30s", word1, word2);
    while (strcmp(word1, "END") != 0) {
        printf("      In order they are: ");
        if (strcmp(word1, word2) <= 0) {
            /* word1 belongs before, or is the same as, word2 */
            printf("%s %s\n", word1, word2);
        } else {
            /* word2 belongs before word1 */
            printf("%s %s (swapped)\n", word2, word1);
        }
        printf("Enter two words: ");        /* prompt and... */
        scanf("%30s %30s", word1, word2);   /* get next two words */
    }
    printf("Detected END word\n");
}