Homework assignment #1

Due Monday, October 18 by the beginning of class

All answers (files) should be stored in a folder named H:\Homework\HW1

1. Get a copy of the file id.txt (by clicking on the link to the left, and saving the file). The file should be saved as:

H:\Homework\HW1\id.txt

Edit the file to add your name, computer account name (cs5a??), and preferred e-mail address. The e-mail address can be your cs5a computer account (cs5a??@ieng9.ucsd.edu) or it could be your own e-mail address. This will be the address we will send homework scores to.

2. Compile and run the following program (which is very similar to the Fahrenheit-to-Celsius conversion program from page 9 (section 1.2) of your text). Store the program file as ftoc.cpp, and also create a file named ftoc.txt, containing the output you get when you run this program.

   /*
    * FtoC1 – print a Fahrenheit-to-Celsius
    * conversion table
    */
   
   #include <stdio.h>
   
   int main (void)
   {
       int fahr;
       int celsius;
       int lower = 10;
       int upper = 300;
       int step = 27;
   
       fahr = lower;
       while (fahr <= upper) {
           celsius = 5 * (fahr - 32) / 9;
           printf ("%d\t%d\n", fahr, celsius);
           fahr = fahr + step;
       }
       return 0;
   } 

   Once you have this program working, modify the line

celsius = 5 * (fahr - 32) / 9;

so that it reads:

celsius = (5/9) * (fahr - 32);     

and run the program now. What does the output look like this time? Write a sentence or two in ftoc.txt that describes the output.

For extra credit, try changing the program so that a heading gets printed above the table. It could look something like this:

 F    C
---  ---

... and then the temperature table.