Lab 2: Variables

1
Lab 2 Variables Equations

• Design a program to compute the area and
  circumference of a circle.
• The user will input
• Radius of the circle (in meters)
• A name for the circle (string of less than 50
  characters)
• The program will output to the console
• Name of your circle
• The area and circumference of the circle
• Use ALL the following concepts
• Style (comments, variable names, etc.)
• Named Constants (for pi)
• Reading a string
• The pow function
• Hand-in the following
• IPO Chart
• Flow Chart with Pseudocode
• Enter and test your algorithm using the compiler
• Demonstrate that your program is working before
  leaving.

2
IPO Chart
3
Flow Chart and Pseudocode
Start
Enter Name and radius
Area radius2 3.14
Perimeter 2radius3.14
Display name, Area, and Circ.
Stop
4
Desk Check Chart
5
Code

• /
• Author Jim Anderson
• /
• include ltiostream.hgt
• include ltmath.hgt
• int main ()
• char name50
• double radius
• double diameter
• double circ
• double area
• const double pie 3.14159
• cout ltlt "Enter the name of your circle "
• cin.getline(name,50)
• cout ltlt "Enter the radius (meters) "