Whether character is alphabet, digit or special character

#include<stdio.h>
int main()
{
    char ch;
    printf("Enter the character:");
    scanf("%c", &ch);
    if((ch>='a' && ch<='z') || (ch>='A' && ch<='Z'))
    {
        printf("It's an alphabet\n");
    }
    else if(ch>='0' && ch<='9')
    {
        printf("It's a digit\n");
    }
    else
    {
        printf("It's a special character\n");
    }
    return 0;
}