Remove Duplicate Characters from a String

Code

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

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

    while(str[index] != '\0')
    {
        char current = str[index]; 
        int pos = index; 
        for (int i = index + 1; str[i] != '\0'; i++)
        {   
            if(str[i] != current)
            {   
                pos++;
                str[pos] = str[i]; 
            }
        }
        str[pos+1] = '\0';
        index++; 
        
    }
}

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