_fur | C Charisma Tubagus Setyobudhi

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

#define MAXC 7

void swap(char *a, char *b)
{
        char t = *a;
        *a = *b;
        *b = t;
}

int main(void)
{
        int i, len;
        char *in = malloc(MAXC + 1);
        char *init = malloc(MAXC + 1);

        printf("Input text : ");
        fgets(in, MAXC, stdin);

        // Delete whitespace
        sscanf(in, "%s", init);
        strncpy(in, init, MAXC);

        // String length
        for (len = 0; in[len]; len++);

        do {
                for (i = 0; i < len - 1; i++) {
                        swap(in + i, in + i + 1);
                        printf("%s ", in);
                }

                printf("\n");
        } while (strcmp(in, init));

        free(in);
        free(init);

        return 0;
}