/*
* C Program to sort string ignoring whitespaces and repeating characters only once
*/
#include <stdio.h>
#include <string.h>

#define SIZE 50

void main()
{
    char string[SIZE], string1[SIZE], string2[SIZE];
    int i, j = 0, a = 0, temp, len = 0, len1 = 0, k = 0;
    printf("
           Enter a string:");
           scanf("%[^
                ]s", string1);
           /* Code to remove whitespaces */
           for (i = 0; string1[i] != ''; i++)
    {
        if (string1[i] == ' ')
                {
                    continue;
                }
            string[j++] = string1[i];
        }
    /* Code to sort the string */     for (i = 0; string[i] != ''; i++)
    {
        for (j = i + 1; string[j] != ''; j++)
                {
                    if (string[i] > string[j])
                        {
                            temp = string[i];
                            string[i] = string[j];
                            string[j] = temp;
                        }
                }
        }
    string[i] = '';
                len = strlen(string);
                /* Code to remove redundant characters */
                for (i = 0; string[i] != ''; i++)
    {
        if (string[i] == string[i + 1] && string[i + 1] != '')
                {
                    k++;
                    continue;
                }
            string2[a++] = string[i];
            string[a] = '';
        }
    len1 = len - k;
           printf("The sorted string is:");
           for (temp = 0; temp < len1; temp++)
    {
        printf("%c", string2[temp]);
        }
}


Enter a string:
abcdel bcdl abcdefg
The sorted string is:
abcdefgl