Announcements and Reminders

• Assignment 1 is due now
• Attendance using Zoom "waiting room"
• Virtual Club Day:  Thursday, October 1st, 12:00 - 3:00 pm
• Tomorrow's online session will be held at 1:30 pm
  

Review Topics

Arrays

What is an array? 

How to ...

• Declaration

• Indexing

• Traversing an array

•  Passing an array to a function

• Passing an array element to a function

Examples

1. Calculate the sum of an array

2. Calculate the average of an array

3. Calculate the maximum of an array

• Creating Functions That Use Parameters
• Functions That Use Multiple Parameters
• Arrays
• Create an Array using Loops
• Using Arrays in Calculations
• Passing Arrays to Functions

Lab Exercise #2

Put your name, the compiler used, and Lab Exercise #2 in a comment at the top of your program. Email only your source code.

The file below contains first and last names and the radii of circles.  You'll need to cut and paste the data into a text file.  Write a program to read the file and store the last names and the radii in two arrays.  You'll need an array of type string and another array of some numeric type.  The arrays should each hold 14 elements.  Then, print out the last names and the circle areas, each in a column of width 12.  Make sure you match the implied output format and that you check for a successful file open.  Include a function to calculate of the circle area using the formula:

Area = PI * radius * radius

For PI, use a named constant equal to 3.14159265

Input data - copy to a text file and make sure there is a newline at the end of the last line in the file.

Program Output