The purpose of this assignment is to practice using loops (chapter 4). You will write (yet another) distance conversion program, but this time the user can specify the parameters of a conversion table – what value it starts with, where it ends, and how much to increase each row.

Call your program p6table.cpp and submit to this dropbox for project 6.

Sample runs

Below are some sample runs:

Enter start: 1.5
Enter stop: 2.5
Enter step: 0.2

Miles   Kilometers
 1.500   2.414
 1.700   2.736
 1.900   3.058
 2.100   3.380
 2.300   3.701

Another run:

Enter start: 10.2
Enter stop: 20
Enter step: 3

Miles   Kilometers
 10.200   16.415
 13.200   21.243
 16.200   26.071
 19.200   30.899

Alignment

In order to get a well-aligned table, we need to tell cout to use a fixed number of places after the decimal point. Otherwise it might print 4 miles in one row, then 4.25 in the next and 4.5 in the next, and the kilometers column would become unaligned:

Miles   Kilometers
 4   6.43736
 4.25   6.83969
 4.5   7.24203
 4.75   7.64436
 5   8.0467
 5.25   8.44904
 5.5   8.85137

To fix this, add this new library at the top of your program:

#include <iomanip>

and then use this statement somewhere before you start printing the table:

    cout << fixed << setprecision(3);

Here’s what that same table looks like now:

Miles   Kilometers
 4.000   6.437
 4.250   6.840
 4.500   7.242
 4.750   7.644
 5.000   8.047
 5.250   8.449
 5.500   8.851

Error checking

You should do some simple error-checking:

Enter start: 19
Enter stop: 0
ERROR: stop must be greater than start.

Enter start: 7
Enter stop: 24
Enter step: 0
ERROR: step must be greater than zero.

PDF version

Project 6

Sample runs

Alignment

Error checking