Remove Duplicate Characters from a String

Code

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

void remove_duplicates(char *str)
{
    // Your logic here
    char *fwd = (str + 1);
    char *temp_str = str;
    char *temp_fwd;

    while (*str != '\0')
    {

        if (*str == *fwd)
        {
            temp_fwd = fwd+1;
            while (*fwd != '\0')
            {
                *fwd = *(fwd + 1);
                if (*fwd == '\0'){
                    break; 
                }
                ++fwd;
            };
            fwd = temp_fwd; 
        }
        else
        {
            ++fwd;
        }

        if (*fwd == '\0')
        {
            ++str;
            fwd = str + 1;
        }
    }
    // printf("\n");
}

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