Remove Duplicate Characters from a String

Code

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

void remove_duplicates(char *str) {
	//Your logic here 
    int write = 0;

    for (int read = 0; str[read] != '\0'; read++) {
        int dup = 0;
        for (int k = 0; k < write; k++) {
            if (str[read] == str[k]) {
                dup = 1;
                break;
            }
        }
        if (!dup) {
            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