Emissions Limits
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CS1043 LAB-5 Emissions Limits
Write a Java program that interacts with a user by printing out a list of pollutants and requests input from the user as follows:
1. Carbon monoxide 2. Hydrocarbons 3. Nitrogen oxides 4. Non-methane hydrocarbons
Enter pollutant number => Enter number of grams emitted per mile => Enter odometer reading =>
Use this table of emissions limits to determine the appropriate output message.
Maximum allowed for Maximum allowed for the first 50,000 miles the next 50,000 miles 0 milage 50000 50000 milage 100000 ______Carbon Monoxide 3.4 grams/mile 4.2 grams/mile Hydrocarbons 0.31 grams/mile 0.39 grams/mile Nitrogen Oxides 0.4 grams/mile 0.5 grams/mile Nonmethane hydrocarbons .25 grams/mile .31 grams/mile
To receive full credit for this project, you must include, 1. one switch statement 2. nested if-control structure 3. Write a static method with the following header line and arguments:
public static boolean mileageGramsLogic( int actualMileage, int firstMileageLimit, int secondMileageLimit, double actualGrams, double firstGramLimit, double secondGramLimit )
(See the next page for more instructions.) Run your program for these three different cases:
Enter pollutant number => 2 Enter number of grams emitted per mile => 0.35 Enter odometer reading => 40112
Enter pollutant number => 3 Enter number of grams emitted per mile => 0.61 Enter odometer reading => 101000
Enter pollutant number => 4 Enter number of grams emitted per mile => 0.27 Enter odometer reading => 60200
The mileagGrams Logic return a Boolean: either the emission amount is or is not within the permitted limit. Print messages like this:
Emissions exceed the permitted level. Emissions are within the permitted level.
Note there is no emission limit for mileage beyond 100000 miles. public class EmissionsLab5 { public static void main( String [] args ) { // Declare ALL your variables here: int pollutantNumber; . . . int firstGramLimit; . . . // display the 4 pollutant choices: CO, HC, NO, other System.out.println( " … " );
// Prompt for the three inputs: pollutant #, grams, mileage System.out.print( " … " );
// Create a switch switch pollutantNumber; { case 1: firstGramLimit = 3.4; case 2:
case 3: }
boolean result = mileageGramsLogic( … );
if ( result ) // display message else // display other message
}
public static boolean mileageGramsLogic( … ) { // use a nested-if control structure and separate the // logic for mileage and pollutant grams.
return false ; // fix this.
}
}