ISLOWER FUNCTION

#include <stdio.h>

int main() {

  if( islower( 'a' ) )
  {
     printf( "Character a is lower case\n" );
  }
  if( islower( 'A' ) )
  {
     printf( "Character A is lower case\n" );
  }
  
  
  getchar();
  return 0;
}