Remove Duplicate Characters from a String

Code

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

bool table[256]={false};
void remove_duplicates(char *str) {
	//Your logic here
    int cnt=0;
    for (int i=0;str[i]!='\0';i++){
        char c=str[i];
        if (!table[c]){
            table[c]=true;
            str[cnt++]=c;

        }
    }
    str[cnt]='\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