Check value it is the alphabet, digit or special character with C language

#include <stdio.h>

int main()
{
    char value;
   
    printf("Enter any character: ");
    scanf("%c", &value);

    /* Alphabet check */
    if ((value >= 'a' && value <= 'z') || (value >= 'A' && value <= 'Z'))
    {
        printf("'%c' is alphabet.", value);
    }
    else if (value >= '0' && value <= '9')
    {
        printf("'%c' is digit.", value);
    }
    else
    {
        printf("'%c' is special character.", value);
    }

    return 0;
}

Output:-

Enter any character: 6
'6' is digit.