1-15

Quest: page 27

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Rewrite the temperature conversion program of section 1.2 to use a function for conversion.

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tip

When you want to reuse code put it into a function.

temp with function

#include <stdio.h>
#include <stdlib.h>

#define LOWER 0
#define UPPER 300
#define STEP 20

// fahr to celsius
double ftoc(int f) { return (5.0 / 9.0) * (f - 32); }

int main() {
  int fahr;
  printf("%-10s %-10s\n", "fahrenheit", "celsius");

  for (fahr = LOWER; fahr <= UPPER; fahr += STEP) {
    printf("%-10d %-10.2f\n", fahr, ftoc(fahr));
  }

  return EXIT_SUCCESS;
}