Unique Characters

 Unique Characters 

 Problem Statement: 

The program must accept a string S as the input. The program must find the unique characters present in the string (remove duplicates) and print them in the order of their occurrence in the string S.

Note: At least one unique character will be present in the string S.

Boundary Condition(s):

1 <= Length of S <= 100

Input Format:

The first line contains the string S.

Output Format:

The first line contains the unique characters in S (in the order of their occurrence in S).

 Example Input/Output 1: 

 Input: 

Ethernet112

 Output: 

Ehrn2

Explanation:

The unique characters in the string "Ethernet112" are E, h, r, n and 2.

So they are printed in the order of their occurrence in the string "Ethernet112".

Hence the output is Ehrn2.

Example Input/Output 2:

Input:

lollipop

Output:

i

 Note: Max Execution Time Limit: 2000 millisecs 

 Solution: 

 Programming Language: C Language 

#include <stdio.h>
#include <stdlib.h>
int main() {
    char a[101];
    scanf("%s",a);
    int charc[128]={0};
    for(int i=0;a[i]!='\0';i++){
        charc[a[i]]++;
    }
    for(int i=0;a[i]!='\0';i++){
        if(charc[a[i]]==1){
            printf("%c",a[i]);
        }
    }
}

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 (Note: Incase If the code doesn't Pass the output kindly comment us with your feedback to help us improvise.)