/*
 * C Program to Delete All Repeated Words in String
 */
#include <stdio.h>
#include <string.h>

void main()
{
    char a[100], b[20][20];
    int i, j = 0, k = 0, n, m;
    printf("enter the string\n");
    scanf("%[^\n]s", a);
    for (i = 0; a[i] != '\0'; i++)
        {
            if (a[i] == ' ')
                {
                    b[k][j] = '\0';
                    k++;
                    j = 0;
                }
            else
                {
                    b[k][j] = a[i];
                    j++;
                }
        }
    b[k][j] = '\0';
    for (i = 0; i <= k; i++)
        {
            for (j = i + 1; j <= k; j++)
                {
                    if (strcmp(b[i], b[j]) == 0)
                        {
                            for (m = j; m <= k; m++)
                                strcpy(b[m], b[m + 1]);
                            k--;
                        }
                }
        }
    for (n = 0; n <= k; n++)
        {
            printf("%s\n", b[n]);
        }
}
/*
*OUTPUT:
enter the string
welcome to sanfoundry's c programming class ,  welcome again to c class !
welcome
to
sanfoundry's
c
programming
class
,
again
!
*/