99. Check if the String Numeric or Alphabetic

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

void classify_string(const char *str) {
    // Your logic here
    bool is_numberic = 0, is_alphabetic = 0;

    while (*str) {
        if (('a' <= *str && *str <= 'z') || ('A' <= *str && *str <= 'Z')) is_alphabetic = 1;
        else if ('0' <= *str && *str <= '9') is_numberic = 1;
        else {
            printf("MIXED");
            return;
        }


        if (is_alphabetic && is_numberic) {
            printf("MIXED");
            return;
        }
        str++; 
    }

    if (is_alphabetic) printf("ALPHABETIC");  
    else if (is_numberic) printf("NUMERIC");  
}

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++;
    }

    classify_string(str);
    return 0;
}