#include <stdio.h>

main()
{
  int fahr;

  for (fahr = 300; fahr >= 0; fahr = fahr - 20)
    printf("%3d %6.1f\n", fahr, (5.0/9.0) * (fahr - 32.0));
}

Solve exercise of Chapter 1, Paragraph 3.
Solve exercise of Chapter 1, Paragraph 3.
