1. Selection Structures (Part 1)
by Yonglei Tao

2. Conditional Statements
Write an algorithm that asks the user for two numbers, and print the larger one.
Get the values of a, b from user
If the value of a is greater than the value of b then
print “The larger number is ” & a
Else
print “The larger number is ” & b
Test 1: What does the program print if the user enters 10, 3?
Test 2: What does the program print if the user enters 2, 11?

3. Conditional Statements (Cont.)
Write an algorithm to compute the distance traveled and the average miles per gallon on a trip when given as input the number of gallons used and the starting and ending mileage readings on the odometer.
get gallons, start, end
distance = end – start
mpg = distance / gallons
print mpg
if mpg > 25.0 then
print “You are getting good gas mileage”

4. Example One

5. Flowchart

7. Example Two

8. Flowchart

10. Example Three

11. The Select Case Statement

12. Example Four

14. Problem Specification