99. Check if the String Numeric or Alphabetic

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

void classify_string(const char *str) {
    // Your logic here
    int is_num = 0, is_alpha = 0, is_mixed = 0;
    while(*str){
        if(*str >= '0' && *str <= '9'){
            is_num = 1;
        }
        else if((*str >= 'a' && *str <= 'z') || (*str >= 'A' && *str <= 'Z')){
            is_alpha = 1;
        }
        else{is_mixed = 1;}
        *str++;
    }
    if(is_mixed || (is_alpha & is_num)) printf("MIXED");
    else if(is_alpha) printf("ALPHABETIC");
    else if(is_num) 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;
}