Remove Duplicate Characters from a String

Code

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

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

    while (str[n] != '\0') {
        n++;
    }

    for (int i=0; i<n; i++) {
        for (int j=i+1; j<n; j++) {
            if (str[i] == str[j]) {
                for (int k=j; k<n; k++) {
                    str[k] = str[k+1];
                }
            }
        }
    }

}

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