99. Check if the String Numeric or Alphabetic

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

void classify_string(const char *str) {
    int count = 0;
    int n = 0;
    int a = 0;
    int i = 0;
    while(str[i] != '\0')
    {
        if(str[i] >= '0' && str[i] <= '9')
        {
            n++;
        }
        else if(str[i] >= 'A' && str[i] <= 'z')
        {
            a++;
        }
        i++;
    }

    if (n == i)
    {
        printf("NUMERIC");
    } else if (a == i)
    {
                printf("ALPHABETIC");

    }
    else{
                        printf("MIXED");

    }
}

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;
}