check uppercase and lowercase alphabets in c

#include <stdio.h>
int main() {

    char ch;
   printf("Enter your character: \n");
    scanf("%c", &ch);

     if(ch >= 'A' && ch <= 'Z')
    {
        printf("'%c' is uppercase alphabet.", ch);
    }
    else if(ch >= 'a' && ch <= 'z')
    {
        printf("'%c' is lowercase alphabet.", ch);
    }
    else
    {
        printf("'%c' is not an alphabet.", ch);
    }
return 0;

}