diff options
Diffstat (limited to 'ch1/ftoc.c')
-rw-r--r-- | ch1/ftoc.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/ch1/ftoc.c b/ch1/ftoc.c new file mode 100644 index 0000000..70b994a --- /dev/null +++ b/ch1/ftoc.c @@ -0,0 +1,37 @@ +#include<stdio.h> + +#define LOWER 0 // lower limit of table +#define UPPER 300 // upper limit of table +#define STEP 20 // step size + +float ftoc(int fahr); + +/* + * Print Fahrenheit-Celcius table for fahr = 0, 20, ... 300. + */ +main() { + float fahr, celcius; + int lower, upper, step; + + lower = LOWER; // lower limit of temperature table + upper = UPPER; // upper limit of temperature table + step = STEP; // step size + + fahr = lower; + + printf("%3s %6s\n", "F", "C"); + + // while (fahr <= upper) { + // celcius = 5.0 / 9.0 * (fahr - 32.0); + // printf("%3.0f %6.1f\n", fahr, celcius); + // fahr = fahr + step; + // } + + for (fahr = UPPER; fahr >= LOWER; fahr = fahr - STEP) { + printf("%3.0f %6.1f\n", fahr, ftoc(fahr)); + } +} + +float ftoc(int fahr) { + return (5.0 / 9.0) * (fahr - 32); +} |