1-15.c

   1 #include <stdio.h>
   2    /* exercise 1-15: exercise 1-3 but with a function */
   3    /* print Fahrenheit-Celsius table
   4        for fahr = 0, 20, ..., 300; floating-point version */
   5 int fahrc(float lower, float upper, float step)
   6 {
   7         float i;
   8
   9         printf("Fahr\tC\n");
  10         for (i = lower; i <=upper; i += step)
  11                 printf("%3.0f %6.1f\n", i, ((5.0/9.0) * (i-32.0)));
  12
  13         return 0;
  14 }
  15
  16 main()
  17 {
  18     float fahr, celsius;
  19     float lower, upper, step;
  20
  21     lower = 0;      /* lower limit of temperatuire scale */
  22     upper = 300;    /* upper limit */
  23     step = 20;      /* step size */
  24         fahrc(lower, upper, step);
  25
  26     /*fahr = lower;
  27         printf("Fahr\tC\n");
  28     while (fahr <= upper) {
  29         celsius = (5.0/9.0) * (fahr-32.0);
  30         printf("%3.0f %6.1f\n", fahr, celsius);
  31         fahr = fahr + step;
  32     }*/
  33
  34 }