94. Remove Duplicate Characters from a String

#include <stdio.h>
#include <stdint.h>
int custom_strlen(const char *str) {
    // Your logic here
    char c ='a';
    int count =0;
    while ( *str != '\0'){
        count++;
        str++;
    }
    return count;
}

void remove_letter( char *str, int pos){
    while (str[pos] != '\0') {
    str[pos] = str[pos + 1];
    pos++;
}
}

void remove_duplicates(char *str) {
	//Your logic here
    int length = custom_strlen(str) ;
 
    for ( int i =0; i < length ; i++){
    for ( int j =i + 1; j < length ;){
        if ( str[i] == str[j]){
            remove_letter(str, j);
            length--;
    }
            else j++;
    }
}
}
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;
}