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#print
(Section 1.3)
The file Ref.c contains a copy of
a program to convert Fahrenheit to
Celsius that prints from 0 to 300
degrees in steps of 20.
Modify it to print from 300 down to 0
in steps of 50. Type ready when you're done.
#once #create Ref
300 148.9
250 121.1
200 93.3
150 65.6
100 37.8
50 10.0
0 -17.8
#once #create Ref.c
/* print Fahrenheit-Celsius table
for f = 0, 20, ..., 300 */
main()
{
int lower, upper, step;
float fahr, celsius;
lower = 0; /* lower limit of temperature table */
upper = 300; /* upper limit */
step = 20; /* step size */
fahr = lower;
while (fahr <= upper) {
celsius = (5.0/9.0) * (fahr-32.0);
printf("%4.0f %6.1f\n", fahr, celsius);
fahr = fahr + step;
}
}
#user
a.out >x
#cmp Ref x
#succeed
Here's our solution:
main() /* Fahrenheit-Celsius 300 ... 0 by 50 */
{
int lower, upper, step;
float fahr;
lower = 0; /* lower limit of temperature table */
upper = 300; /* upper limit */
step = 50; /* step size */
for (fahr = upper; fahr >= lower; fahr = fahr - step)
printf("%4.0f %6.1f\n", fahr, (5.0/9.0) * (fahr-32.0));
}
#log
#next
3.1b 10
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