Selection Structure

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# Selection Structure - PowerPoint PPT Presentation

Selection Structure. by Yonglei Tao. 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 ” &amp; a Else

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### Selection Structure

by Yonglei Tao

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 enter 10, 3?
• Test 2:What does the program print if the user enter 2, 11?
Example
• 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”

Exercise
• Write an algorithm that asks the user to enter three numbers, and computes and prints out the largest number