Remove Duplicate Characters from a String

Code

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


void remove_duplicates(char *str) {
	//Your logic here
    uint8_t ascii_chars[256] = {0};
    char *src = str;
    char *dst = str;
    while(*src)
    {
        if(0 == ascii_chars[*src])
        {
           *dst = *src;
           dst++;
           ascii_chars[*src]++;
        }
        src++;
    }   
    *dst = '\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