Check if the String Numeric or Alphabetic

Code

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

void classify_string(const char *str) {
    // Your logic here
    int i = 0;
    int stat = 0;
    while(str[i] != '\0')
    {
        if((str[i] >= 65 && str[i] <= 90) || (str[i] >= 97 && str[i] <= 122))
            stat |= 1;
        else if(str[i] >= '0' && str[i] <= '9')
            stat |= 1 << 1;
        else
            stat |= 1 << 2;
        i++;
    }
    if(stat == 1)
        printf("ALPHABETIC");
    else if(stat == 2)
        printf("NUMERIC");
    else 
    {
        if(stat)
            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