Check if the String Numeric or Alphabetic

Code

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

void classify_string(const char *str) {
    // Your logic here
    char type = 0,length = 0,numeric = 0,alphabetic = 0;
    while(*str != '\0')
    {
        if(*str >= '0' && *str <= '9')
        {
            numeric++;
        }
        else if((*str >= 'A' && *str <= 'Z') || *str >= 'a' && *str <= 'z' )
        {
            alphabetic++;
        }
        length++;
        str++;
    }
    if(length == numeric)
    {
        printf("NUMERIC");
    }
    else if(length == alphabetic)
    {
        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;
}

Solving Approach