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

int main()
{
    //Input string
    char str[30] = "Pencil Programmer";

    //find ength of the string
    int length = strlen(str);

    //Iterate through all the characters
    for (int i = 0; i < length; i++)
    {

        //select a character
        char ch = str[i];

        //check if the character mathches any other in later part
        for (int j = i + 1; j < length; j++)
        {
            if (str[i] == str[j])
            {
                //If yes, then shift the right characters to the left
                for (int k = j; k < length; k++)
                {
                    str[k] = str[k + 1];
                }
                length--;
            }
        }
    }

    //output string
    printf("%s", str);

    return 0;
}