#include <stdio.h>

void	get_input(int *height, int *width);
int 	get_positive_integer( char *s);

void	draw_box(int width, int   height);
void 	draw_solid_line( int   width);
void	draw_hollow_line( int   width);

int main( void )
{
	int height ;
	int	width  ;

	get_input(&height, &width);

	draw_box( height, width);

	return 0;
}

void	get_input(int *height, int *width)
{
	*height = get_positive_integer("height") ;
	*width  = get_positive_integer("width") ;

	return;
}

int    get_positive_integer( char *input_string)
{
	int input;

	do {
		printf( "Please enter a %s > 0 :  \n", input_string );
		scanf( "%d", &input);

	} while ( input <= 0 );

	return input;
}

void draw_box( int  height, int width)
{
	draw_solid_line( width );

	int  i ;
	for (i = 1; i <= ( height - 2 ) ; i++ )
	{
		draw_hollow_line( width );
	}

	draw_solid_line( width );

}

void draw_solid_line(int width)
{
	int i;

	for  ( i= 1;  i <= width; i++ )
	{
		printf( "*" );
	}
	printf( "\n" );

}

void draw_hollow_line( int width )
{

	printf( "*" );

	int i;
	for  (  i=0;  i <= ( width - 2 ) ; i++ )
	{
		printf( " " );
	}
	printf( "* \n" );

}