//Program Celsius
#include <stdio.h>
#include <conio.h>

#define step 20
#define lower 0
#define upper 300

main (void)
{
float fahr= lower, celsius;

     textcolor (15);
     textbackground (1);
     clrscr ();
     puts ("Fahr  Celsius");
     puts ("-------------");
     while (fahr <= upper)
	   {
	   celsius = (5.0/9.0)*(fahr -32);
	   textcolor (9);
	   clreol ();
	   printf ("%4.0f %7.2f \n", fahr, celsius);
	   fahr += step;
	   }
     getch ();
     return 0;
}