Program to cheque enter character is upper case or lower case in c-language

#include<stdio.h>
int main()
{
    char ch;
    printf("Enter the character\n");
    scanf("%c",&ch);
    if(ch>=65&&ch<=90)
    {
        printf("Upper case");
    }
else   if(ch>=97&&ch<=122)
    {
        printf("lower case ");
    }
    }

OUTPUT

Enter the character

y

lower case