C Code 7 _ To print the unique characters from a string of consecutive repeating characters in reverse order

C Code 7 _ To print the unique characters from a string of consecutive repeating characters in reverse order

The aim of the program is to print all the repeating characters from a string that has consecutive repeating characters in reverser order.

 example:  

   input string : hello

   output string: oleh

Program:

#include<stdio.h>

#include<string.h>

int main()

{

    char a[100],b[100],c[100];

    int i,j=1,len1,len2,lref;

    printf("Enter the string : ");

    scanf("%s",a);

    len1=strlen(a);

    printf("\nLength of entered string : %d",len1);

    b[0]=a[0];

    for(i=1;i<len1;i++)

    {

          if(a[i]!=a[i-1])

          {

                b[j]=a[i];

                j=j+1;

          }

    }

    b[j]='\0';

    printf("\nThe unique string : %s ",b);

    len2=strlen(b);

    lref=len2-1;

    printf("\nLength of unique string : %d",len2);

    for(i=0;i<len2;i++)

    {

        c[i]=b[lref];

        lref=lref-1;

    }

    c[len2]='\0';

    printf("\nThe result : %s",c);

    getch();

    return 0;

}

Output:

Thank you ...