Remove Duplicate Characters from a String

Code

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

void remove_duplicates(char *str) {
	//Your logic here
    int write=0;
    int n=0;
    while(str[n]!='\0') n++;
    for(int read=0;read<n;read++){
        int seen=0;
        for(int i=0;i<write;i++){
            if (str[i] == str[read]) {
                seen = 1;
                break;
            }
        }
        if(!seen){
            str[write++]=str[read];
        }
        
    
    }
    str[write]='\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;
}

Solving Approach