CMIS 102
Lab exercise


Download
http://sensei.ad.umuc.edu/dwills/cmis102/notices.cpp

Run this modified (i.e. improved) version of the notices.cpp program
of page 234 with various sets of input data.  Include a negative
number in one test set.  Make test sets of numbers so that each of the
three categories of warning notices are produced.

Then change it so that a fourth test is part of the average.  

Then add a check that every test score is less than or equal to 100.

*************************************

Download
http://sensei.ad.umuc.edu/dwills/cmis102/month_days.cpp

Change the program so that it first checks if the month is 2, then
checks if it's a 31-day month.  This doesn't accomplish anything
except to practice if's.

*************************************

Download
http://sensei.ad.umuc.edu/dwills/cmis102/valid.cpp

Run it with data that makes each if true and makes it false.


*************************************

Download
http://sensei.ad.umuc.edu/dwills/cmis102/loopnums.cpp

Play with it a bit to understand what it's doing (run it a few times
with different inputs.)

Time it (roughly if you don't have a second hand [on your watch]) for
a longish loop (say, 100,000).  Then modify it by commenting out the
cout in the while loop, rerunning it with the same number and
comparing the times.  What can you conclude about outputting?

How long does it take to do a million loops (without the output), how
long to a billion?

Change it so that the output numbers are separated by a space.