94. Remove Duplicate Characters from a String

#include <stdio.h>
#include <stdint.h>

void remove_duplicates(char *str) {
	//Your logic here
    int seen[256] = {0};
    int i =0;
    int j =0;

    while(str[i] != '\0')
    {
    unsigned char ch = str[i];
    if(seen[ch]==0)
    {
        seen[ch] = 1;
        str[j] = str[i];
        j++;
    }
    i++;
    }
    str[j] = '\0';
}

int main() {
    char str[101];
    fgets(str, sizeof(str), stdin);

    // Remove newline
    uint8_t i = 0;
    while (str[i]) {
        if (str[i] == '\n') {
            str[i] = '\0';
            break;
        }
        i++;
    }

    remove_duplicates(str);
    printf("%s", str);
    return 0;
}