Remove Duplicate Characters from a String

Code

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

void remove_duplicates(char *str) {
	//Your logic here
    char dest[255];
    bool temp[255] = {0};
    int i=0;
    int count = 0;
    while(str[i] != '\0')
    {
        if(!temp[str[i]])
        {
            temp[str[i]] = true;
            dest[count++] = str[i];
        }
        else
        {

        }
        i++;
    }
    dest[count] = '\0';
    char* d = dest;
    while(*str++ = *d++);

    }

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