C language determines whether characters are lowercase letters?

/*
check whether character is lowercase  alphabet in C language
*/

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main()
{
  char Ch = 'a';

  if (Ch >= 97 && Ch <= 122)
   {
     printf ( "\nThe character is lowercase alphabet") ;
   }
  else
   {
     printf("\nThe character is Not lowercase alphabet");
   }
}